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Wikipedia

Glock

February 06, 2023

This article is about the semi-automatic pistol. For other uses, see Glock (disambiguation).

Glock is a brand of polymer-framed, short recoil-operated, locked-breech semi-automatic pistols designed and produced by Austrian manufacturer Glock Ges.m.b.H.

Glock
Glock 17 "First-generation" full-size model adopted in 1985 by the Norwegian military under the P80 designation
Type
Place of originAustria
Service history
In service1982–present
Used bySee Users
Production history
DesignerGaston Glock
Designed1979–1982
ManufacturerGlock Ges.m.b.H.
Produced1982–present
No. built20,000,000 as of 2020[1]
VariantsSee Variants
Specifications
Cartridge
ActionShort recoil, locked breech, tilting barrel (straight blowback for Glock 25, 28 and 44)
Rate of fireGlock 18 (Full Auto): 1,100–1,200 RPM (rounds per minute)
Muzzle velocity375 m/s (1,230 ft/s) (Glock 17, 17C, 18, 18C)[2]
Effective firing range50 m (55 yd) (Glock 17, 17C, 18, 18C)[3][4]
Feed system6-, 10-, 13-, 15-, 17-, 19-, 24-, 31-, 33-, or 40-round[5] detachable box magazine, or 50- or 100-round[6] detachable drum magazine

The firearm entered Austrian military and police service by 1982 after becoming the top performer in reliability and safety tests.[7]

Glock pistols have become the company's most profitable line of products, and have been supplied to national armed forces, security agencies, and police forces in at least 48 countries.[8] Glocks are also popular firearms among civilians for recreational and competition shooting, home- and self-defense, both in concealed or open carry.[9] In 2020, the Glock 19 was the best selling pistol on GunBroker.[10]

History

The company's founder, head engineer Gaston Glock, had no experience with firearms design or manufacture at the time their first pistol, the Glock 17, was being prototyped. Glock had extensive experience in advanced synthetic polymers, which was instrumental in the company's design of the first commercially successful line of pistols with a polymer frame.[11] Glock introduced ferritic nitrocarburizing into the firearms industry as an anticorrosion surface treatment for metal gun parts.[12]

Development

In 1980, the Austrian Armed Forces announced that it would seek tenders for a new, modern duty pistol to replace their World War II–era Walther P38 handguns.[7] The Federal Ministry of Defence of Austria formulated a list of 17 criteria for the new generation service pistol, including requirements that it would be self loading; fire the NATO-standard 9×19mm Parabellum round; the magazines were not to require any means of assistance for loading; be secure against accidental discharge from shock, strike, and drop from a height of 2 m (6 ft 7 in) onto a steel plate.[7] After firing 15,000 rounds of standard ammunition, the pistol was to be inspected for wear. The pistol was to then be used to fire an overpressure test cartridge generating 5,000 bar (500 MPa; 73,000 psi).[dubious – discuss] The normal maximum operating pressure (Pmax) for the 9 mm NATO is 2,520 bar (252 MPa; 36,500 psi).[13]

Glock became aware of the Austrian Army's planned procurement, and in 1982, assembled a team of Europe's leading handgun experts from military, police, and civilian sport-shooting circles to define the most desirable characteristics in a combat pistol.[7] Within three months, Glock had developed a working prototype that combined proven mechanisms and traits from previous pistol designs.[14] In addition, the plan was to make extensive use of synthetic materials and modern manufacturing technologies, which led to the Glock 17 becoming a cost-effective candidate.

Several samples of the Glock 17 (so named because it was the 17th patent procured by the company)[15] were submitted for assessment trials in early 1982, and after passing all of the exhaustive endurance and abuse tests, the Glock emerged as the winner.[16][17][18]

The handgun was adopted into service with the Austrian military and police forces in 1982 as the Pistole 80 (P80),[19] with an initial order for 25,000 guns.[14] The Glock 17 outperformed eight different pistols from five other established manufacturers (Heckler & Koch of Germany offered their P7M8, P7M13, and P9S, SIG Sauer of Switzerland bid with their P220 and P226 models, Beretta of Italy submitted their model 92SB-F, FN Herstal of Belgium proposed an updated variant of the Browning Hi-Power, and the Austrian Steyr Mannlicher entered the competition with the GB).[20]

The results of the Austrian trials sparked a wave of interest in Western Europe and overseas, particularly in the United States, where a similar effort to select a service-wide replacement for the M1911 had been going on since the late 1970s (known as the Joint Service Small Arms Program). In late 1983, the United States Department of Defense inquired about the Glock pistol and received four samples of the Glock 17 for unofficial evaluation.[21] Glock was then invited to participate in the XM9 Personal Defense Pistol Trials, but declined because the DOD specifications would require extensive retooling of production equipment and providing 35 test samples in an unrealistic time frame.[21]

In 1985, after joint Norwegian and Swedish trials from 1983 to 1985, the Glock 17 was accepted into service as the P80 in Norway, and in 1988 as the Pistol 88 in Sweden, where it surpassed all prior NATO durability standards.[22][23][21] As a result, the Glock 17 became a standard NATO-classified sidearm and was granted a NATO Stock Number (1005-25-133-6775).[21] By 1992, some 350,000 pistols had been sold in more than 45 countries, including 250,000 in the United States alone.[19]

Starting in 2013, the British Armed Forces began replacing the Browning Hi-Power pistol with the Glock 17 Gen 4, due to concerns about weight and the external safety of the Hi-Power.[24] The British preferred the Glock 17 Gen 4 over the Beretta Px4 Storm, FN FNP, Heckler & Koch P30, SIG Sauer P226, Smith & Wesson M&P, and Steyr M9A1 of which 19 pistols each, all chambered in 9×19 mm Parabellum, were entered in the R9GSP trials.[25][26]

The French Armed Forces (FAF) in 2020 began replacing their MAC Mle 1950 and, to a lesser extent, their PAMAS G1 pistols with Glock 17 Gen 5 models specifically made for the FAF.[27] The French preferred the Glock 17 Gen 5 over the HS2000 and CZ P-10 offerings that also made it to the final selection phase.[28]

Product evolution

Glock has updated its basic design several times throughout its production history.

First-generation models

 
A "first-generation" Glock 17 with the slide locked back displaying its vertical barrel tilt.

The first-generation (Gen 1) Glock pistols are most notably recognized by their smoother "pebble finish" grip and finger groove-less frames. The Gen 1 frame pattern and design was used by Glock from 1982 through 1988 and pre-dates the checkered grip patterns used in the second generation of Glock pistols. The first Glock 17s imported to the US were serialized with an alpha-numeric (two-letter prefix followed by three numbers) stamped into the slide, barrel, and a small metal plate inserted into the bottom side of the polymer frame. The first documented Glock 17s (by serial number) imported into the US were from the AF000 series in January 1986, followed by AH000, AK000, and AL000.[29] These early Glock (Gen 1) pistols (serial number prefix AF through AM) were also manufactured with a barrel that had a smaller overall diameter and thinner bore walls, later known as "pencil barrels". These early Glock 17 "pencil barrel" pistols are considered rare and highly desirable by Glock collectors.[original research?] The barrels were later redesigned with thicker bore walls and manufacturing continued to evolve and improve the design of Glock pistols.[30]

Many of the first-generation Glocks were shipped and sold in the iconic "Tupperware" style plastic boxes. The earliest Glock boxes had ammunition storage compartments that allowed for 17 rounds of 9mm to be stored with the pistol. This box design was later changed by Glock to meet BATF import requirements and the ammunition storage compartments were removed.[30]

Second-generation models

 
A "second-generation" Glock 17, identified by the checkering on the front and rear straps of the pistol grip and trigger guard.

A mid-life upgrade to the Glock pistols involved the addition of checkering on the front strap and trigger guard and checkering and serrations to the back strap. These versions, introduced in 1988, were informally referred to as "second-generation" models. To meet American ATF regulations, a steel plate with a stamped serial number was embedded into the receiver in front of the trigger guard. In 1991, an integrated recoil spring assembly replaced the original two-piece recoil spring and tube design. The magazine was slightly modified, changing the floorplate and fitting the follower spring with a resistance insert at its base.[citation needed]

Third-generation models

 
A "third-generation" Glock 17C, identified by the addition of an extra cross pin above the trigger, finger grooves, a reshaped extractor that serves as a loaded chamber indicator, and an accessory rail.

In 1998, the frame was further modified with an accessory rail (called the "Universal Glock rail") similar to a picatinny rail to allow the mounting of laser sights, tactical lights, and other accessories. Thumb rests on both sides of the frame and finger grooves on the front strap were added. Glock pistols with these upgrades are informally referred to as (early) "third-generation" models. Later third-generation models additionally featured a modified extractor that serves as a loaded chamber indicator, and the locking block was enlarged, along with the addition of an extra cross pin to aid the distribution of bolt thrust forces exerted by the locking block. This cross pin is known as the locking block pin and is located above the trigger pin.[31]

The polymer frames of third-generation models can be black, flat dark earth, or olive drab. Besides that, non-firing dummy pistols ("P" models) and non-firing dummy pistols with resetting triggers ("R" models) have a bright red frame, and Simunition-adapted practice pistols ("T" models) a bright blue frame for easy identification.[32]

In 2009, the Glock 22 RTF2 (Rough Textured Frame 2) (chambered in .40 S&W) was introduced. This pistol featured a new checkering texture around the grip and new scalloped (fish gill-shaped) serrations at the rear of the sides of the slide.[33][34] Many of the existing models became available in the RTF2 version, including the 31, 32, 23, 21, and 19. Some of those did not have the fish gills.[original research?]

Fourth-generation models

 
A "fourth-generation" Glock 17, identified by an enlarged and reversible magazine release catch, modified rough texture frame grip checkering, interchangeable backstraps, and a "Gen4" rollmark on the slide.
 
A "fourth-generation" Glock 19.

At the 2010 SHOT Show, Glock presented the "fourth generation", now dubbed "Gen4" by Glock itself.[35] Updates centered on ergonomics and the recoil spring assembly. The initial two fourth-generation models announced were the full-sized Glock 17 and Glock 22, chambered for the 9×19 mm Parabellum and .40 S&W cartridges, respectively. The pistols were displayed with a modified rough-textured frame, grip checkering, and interchangeable backstraps of different sizes. "Gen4" is rollmarked on the slide next to the model number to identify the fourth-generation pistols.

The basic grip size of the fourth-generation Glock pistols is slightly smaller compared to the previous design. A punch is provided to remove the standard trigger housing pin and replace it with the longer cross pin needed to mount the medium or large backstrap that will increase the trigger distance by 2 mm (0.079 in) or 4 mm (0.16 in). With the medium backstrap installed, the grip size is identical to the third-generation pistols. The magazine release catches are enlarged and reversible for left-handed use.[36] To use the exchangeable magazine release feature, fourth-generation Glock magazines have a notch cut on both sides of the magazine body. Earlier versions of the magazines will not lock into the Gen4 pistols if the user has moved the magazine release button to be operated by a left-handed user. Gen4 magazines will work in older models.[37]

Mechanically, fourth-generation Glock pistols are fitted with a dual recoil spring assembly to help reduce perceived recoil and increase service life expectancy. Earlier subcompact Glock models such as the Glock 26 and Glock 30 have already used a dual recoil spring assembly that was carried over to the fourth-generation versions of those models. The slide and barrel shelf have been resized, and the front portion of the polymer frame has been widened and internally enlarged, to accommodate the dual recoil spring assembly. The trigger mechanism housing has also been modified to fit into the smaller-sized grip space.[38][39][40][41][42]

The introduction of fourth-generation Glock pistols continued in July 2010 when the Glock 19 and Glock 23, the reduced size "compact" versions of the Glock 17 and Glock 22, became available for retail.[43] In late 2010, Glock continued the introduction of fourth-generation models with the Glock 26 and Glock 27 "subcompact" variants.

In January 2013, more fourth-generation Glock pistols were introduced commercially during the annual SHOT Show, including the Glock 20 Generation 4 along with other fourth-generation Glock models.

2011 recoil spring assembly exchange program

In September 2011, Glock announced a recoil spring exchange program in which the manufacturer voluntarily offers to exchange the recoil spring assemblies of its fourth-generation pistols (with the exception of the "subcompact" Glock 26 and Glock 27 models) sold before 22 July 2011 at no cost "to ensure our products perform up to GLOCK's stringent standards", according to the company.[44]

M series

On 29 June 2016, the United States Federal Bureau of Investigation (FBI) awarded a contract to Glock to provide new 9×19mm Parabellum chambered duty pistols.[45] The solicitation specifications deviated from the specifications of Glock fourth-generation models.[46]

In August 2016, the Indianapolis Metro Police Department (IMPD) started training with a batch of Glock 17M pistols. The most obvious difference with the Glock third- and fourth-generation models on published images is the omission of finger grooves on the grip.[47] In October of that year, the IMPD issued a 17M voluntary recall following failures encountered while dry firing the pistols during training. According to Major Riddle with the IMPD, "Glock is working to correct the problem and we hope to begin issuing the new [17Ms] as soon as December."[48][49]

Fifth-generation models

In August 2017, Glock presented the "fifth generation" or "Gen 5". The revisions centered on ergonomics and improving reliability. Many parts of fifth-generation Glock pistols cannot be interchanged with those of the previous generations. The two fifth-generation models announced were the Glock 17 and Glock 19, chambered for the 9×19mm Parabellum. Some conspicuous changes on the fifth-generation models are ambidextrous slide stop levers, DLC surface finish for barrel and slide, a barrel featuring a revised style of polygonal rifling (called the "Glock Marksman Barrel" by Glock), a deeper recessed barrel crown, omission of the finger grooves on the grip, a flared magazine well, and a reintroduction of a half-moon-shaped cutout on the bottom front of the grip. The locking block pin located above the trigger pin that was introduced in the third generation is omitted. Many internal parts were less conspicuously revised.[50][51][52][53][54] "Gen 5" is rollmarked on the slide next to the model number to identify the fifth-generation pistols. The "Gen 5" slide can feature front serrations (FS) to provide an additional tactile traction surface choice. The magazines were also revised for the fifth-generation models: the redesigned magazine floor plates feature a frontward protruding lip to offer grip for manual assisted extraction and the magazine follower[55] became orange colored for easier visual identification.

Design details

Operating mechanism

The Glock 17 is a short recoil–operated, locked-breech semi-automatic pistol that uses a modified Browning cam-lock system adapted from the Hi-Power pistol.[56] The firearm's locking mechanism uses a linkless, vertically tilting barrel with a rectangular breech that locks into the ejection port cut-out in the slide. During the recoil stroke, the barrel moves rearward initially locked together with the slide about 3 mm (0.12 in) until the bullet leaves the barrel and chamber pressure drops to a safe level. A ramped lug extension at the base of the barrel then interacts with a tapered locking block integrated into the frame, forcing the barrel down and unlocking it from the slide. This camming action terminates the barrel's movement while the slide continues back under recoil, extracting and ejecting the spent cartridge casing. The slide's uninterrupted rearward movement and counter-recoil cycle are characteristic of the Browning system.[57]

Glock pistols incorporate a number of features intended to enhance reliability in adverse conditions, such as utilizing advanced metal coatings, "stub" slide guides instead of true frame rails, and an unusual cocking mechanism wherein the trigger is partially responsible for cocking the striker.[58] By relying partially on force from the shooter's trigger finger to cock the striker, a Glock effectively reduces the load on the recoil spring as the slide moves forward into battery, whereas almost all other striker-fired pistols on the market rely fully on the recoil spring to cock the striker.[citation needed] This design gives the recoil spring fewer tasks as the action cycles, helping to ensure that sufficient energy is available to strip a new round from the magazine and achieve full battery even when the breech, chamber, and/or magazine are heavily fouled. For these and other reasons, Glock pistols are commonly considered to be some of the most reliable striker-fired, semi-automatic handguns available, with some independent testing even showing a Glock taking a lead over a SIG Sauer P320[59] in a wet/dry reliability test, even though the latter was selected as the winner of the U.S. Army's MHS competition.

Features

 
A subcompact Glock 30 field stripped to its main groups with a .45 ACP round.

The slide features a spring-loaded claw extractor, and the stamped sheet metal ejector is pinned to the trigger mechanism housing.[60] Pistols after 2002 have a reshaped extractor that serves as a loaded chamber indicator. When a cartridge is present in the chamber, a tactile metal edge protrudes slightly out immediately behind the ejection port on the right side of the slide.[61] The striker firing mechanism has a spring-loaded firing pin that is cocked in two stages that the firing pin spring powers. The factory-standard firing pin spring is rated at 24 N (5.4 lbf), but by using a modified firing pin spring, it can be increased to 28 N (6.3 lbf) or to 31 N (7.0 lbf).[62] When the pistol is charged, the firing pin is in the half-cock position. As the trigger is pulled, the firing pin is then fully cocked. At the end of its travel, the trigger bar is tilted downward by the connector, releasing the firing pin to fire the cartridge. The connector resets the trigger bar so that the firing pin will be captured in half-cock at the end of the firing cycle. This is known as a preset trigger mechanism, referred to as the "Safe action" trigger by the manufacturer. The connector ensures the pistol can only fire semiautomatically.

The factory-standard, two-stage trigger has a trigger travel of 12.5 mm (0.49 in) and is rated at 25 N (5.6 lbf), but by using a modified connector, it can be increased to 35 N (7.9 lbf) or lowered to 20 N (4.5 lbf). In response to a request made by American law enforcement agencies for a two-stage trigger with increased trigger pull, Glock introduced the NY1 (New York) trigger module, which features a flat spring in a plastic housing that replaces the trigger bar's standard coil spring. This trigger modification is available in two versions: NY1 and NY2 that are rated at 25 N (5.6 lbf) to 40 N (9.0 lbf) and 32 N (7.2 lbf) to 50 N (11.2 lbf), respectively, which require about 20 N (4.5 lbf) to 30 N (6.7 lbf) of force to disengage the safeties and another 10 N (2.2 lbf) to 20 N (4.5 lbf) in the second stage to fire a shot.

The Glock's frame, magazine body, and several other components are made from a high-strength nylon-based polymer invented by Gaston Glock, called Polymer 2.[63] This plastic was specially formulated to provide increased durability and is more resilient than carbon steel and most steel alloys. Polymer 2 is resistant to shock, caustic liquids, and temperature extremes where traditional steel/alloy frames would warp and become brittle.[63] The injection-molded frame contains four hardened steel guide rails for the slide: two at the rear of the frame, and the remaining pair above and in front of the trigger guard. The trigger guard itself is squared off at the front and checkered. The grip has an angle of 109° and a nonslip, stippled surface on the sides and both the front and rear straps.[64] The frame houses the locking block, which is an investment casting that engages a 45° camming surface on the barrel's lower camming lug. It is retained in the frame by a steel axis pin that holds the trigger and slide catch. The trigger housing is held to the frame by means of a polymer pin. A spring-loaded sheet-metal pressing serves as the slide catch, which is secured from unintentional manipulation by a raised guard molded into the frame. Because of its polymer construction, there were initially fears that Glock pistols would be invisible to airport X-ray machines, making them easy to illegally import into the United States. In actuality, 84% of the gun's weight is from steel, and Polymer 2 is visible to X-ray machines. The myth's prevalence is believed to be connected to a scene that perpetuated the myth in Die Hard 2, which released a few years after the Glock was invented.[65] In 1988, the Undetectable Firearms Act was passed in the United States, banning the manufacture or import of any gun that could pass undetected through a metal detector.

The Glock pistol has a relatively low slide profile, which holds the barrel axis close to the shooter's hand and makes the pistol more comfortable to fire by reducing muzzle rise and allows for faster aim recovery in rapid firing sequences. The rectangular slide is milled from a single block of ordnance-grade steel using CNC machinery.[66] The barrel and slide undergo two hardening processes prior to treatment with a proprietary nitriding process called Tenifer. The Tenifer treatment is applied in a 500 °C (932 °F) nitrate bath.[63] The Tenifer finish is between 0.04 and 0.05 mm (0.0016 and 0.0020 in) in thickness, and is characterized by extreme resistance to wear and corrosion; it penetrates the metal, and treated parts have similar properties even below the surface to a certain depth.[67]

The Tenifer process produces a matte gray-colored, nonglare surface with a 64 Rockwell C hardness rating and a 99% resistance to salt water corrosion (which meets or exceeds stainless steel specifications),[66] making the Glock particularly suitable for individuals carrying the pistol concealed as the highly chloride-resistant finish allows the pistol to better endure the effects of perspiration.[67] Glock steel parts using the Tenifer treatment are more corrosion resistant than analogous gun parts having other finishes or treatments, including Teflon, bluing, hard chrome plating, or phosphates.[67] During 2010, Glock switched from the salt bath nitriding Tenifer process to a not exactly disclosed gas nitriding process. After applying the nitriding process, a black Parkerized decorative surface finish is applied. The underlying nitriding treatment will remain, protecting these parts even if the decorative surface finish were to wear off.[12]

A fourth generation Glock 17 consists of 34 parts.[62] For maintenance, the pistol disassembles into five main groups: the barrel, slide, frame, magazine, and recoil-spring assembly. The firearm is designed for the NATO-standard 9×19mm Parabellum pistol cartridge, but can use high-power (increased pressure) +P ammunition with either full-metal-jacket or jacketed hollow-point projectiles.

Barrel

The hammer-forged barrel has a female type polygonal rifling with a right-hand twist. The stabilization of the round is not by conventional rifling, using lands and grooves, but rather through a polygonal profile consisting of a series of six or eight interconnected noncircular segments (only the .45 ACP and .45 GAP have octagonal polygonal rifling). Each depressed segment within the interior of the barrel is the equivalent of a groove in a conventional barrel. Thus, the interior of the barrel consists of smooth arcs of steel rather than sharply defined slots.

Instead of using a traditional broaching machine to cut the rifling into the bore, the hammer forging process involves beating a slowly rotating mandrel through the bore to obtain the hexagonal or octagonal shape.[68] As a result, the barrel's thickness in the area of each groove is not compromised as with conventional square-cut barrels. This has the advantage of providing a better gas seal behind the projectile as the bore has a slightly smaller diameter, which translates into more efficient use of the combustion gases trapped behind the bullet,[68] slightly greater (consistency in) muzzle velocities, and increased accuracy and ease of maintenance.[69]

The newer lines of Glock pistols—i.e. Gen5, G42/43—are equipped with the Glock Marksmanship Barrel, or GMB. While older barrels were somewhat difficult to identify a bullet as coming from a particular barrel with high enough reliability for evidentiary use, the newer GMB ones are designed differently. A study by Stephen Christen and Hans Rudolf Jordi, published by Forensic Science International in February 2019, shows that the new GMB barrels leave more identifiably unique markings on the fired projectile. These marks were more easily identified than previous pistol barrel markings, and were sufficient for reliably tying a bullet to a particular barrel. The study used a comparison microscope and an ABIS (Evofinder).[70]

Safety

Glock pistols lack a traditional on-off safety lever, which Glock markets as an advantage, especially to police departments, as the user is able to fire immediately without separately manipulating a safety.[71] Instead, the pistols are designed with three independent safety mechanisms to prevent accidental discharge. The system, designated "Safe Action" by Glock, consists of an external integrated trigger safety and two automatic internal safeties: a firing pin safety and a drop safety.[72] The external safety is a small inner lever contained in the trigger. Pressing the lever activates the trigger bar and sheet metal connector. The firing pin safety is a solid hardened steel pin that, in the secured state, blocks the firing pin channel (disabling the firing pin in its longitudinal axis). It is pushed upward to release the firing pin for firing only when the trigger is actuated and the safety is pushed up through the backward movement of the trigger bar. The drop safety guides the trigger bar in a ramp that is released only when direct rearward pressure is applied to the trigger. The three safety mechanisms are automatically disengaged one after the other when the trigger is squeezed, and are automatically reactivated when the trigger is released.[19][73]

In 2003, Glock announced the Internal Locking System (ILS) safety feature named Glock Safety Lock.[74] The ILS is a manually activated lock located in the back of the pistol's grip. It is cylindrical in design and, according to Glock, each key is unique. When activated, the lock causes a tab to protrude from the rear of the grip, giving both a visual and tactile indication as to whether the lock is engaged or not.[75] When activated, the ILS renders the Glock unfireable, as well as making it impossible to disassemble. When disengaged, the ILS adds no further safety mechanisms to the Glock pistol. The ILS is available as an option on most Glock pistols. Glock pistols cannot be retrofitted to accommodate the ILS. The lock must be factory-built in Austria and shipped as a special order.[citation needed]

Feeding

 
A Glock 9×19mm Parabellum 17-round magazine. The numbered witness holes at the back portion visually indicate how many cartridges are contained in the magazine.

The Glock 17 feeds from staggered-column or double stack magazines that have a 17-round capacity (which can be extended to 19 with an optional floor plate) or optional 24 or 33-round high-capacity magazines.[76] For jurisdictions which restrict magazine capacity to 10 rounds, Glock offers single-stack, 10-round magazines. The magazines are made of steel and are overmolded with plastic. A steel spring drives a plastic follower. After the last cartridge has been fired, the slide remains open on the slide stop. The slide stop release lever is located on the left side of the frame directly beneath the slide and can be manipulated by the thumb of the right-handed shooter.

Glock magazines are interchangeable between models of the same caliber, meaning that a compact or subcompact pistol will accept magazines designed for the larger pistols chambered for the same round. However, magazines designed for compact and subcompact models will not function in larger pistols because they are not tall enough to reach the slide and magazine release. For example, the subcompact Glock 26 will accept magazines from both the full-size Glock 17 and the compact Glock 19, but the Glock 17 will not accept magazines from the smaller Glock 19 or the Glock 26. The magazines for the Glock 36, the Glock 42, the Glock 43, and the Glock 44 are all unique; they cannot use magazines intended for another model, nor can their magazines be used in other models.

Sights

 
Standard sighting arrangement of a "first-generation" Glock 17.

The first Glock pistols sent to the United States in 1985 failed to meet the BATF import "points" requirement, requiring Glock to quickly develop an adjustable rear sight which allowed for the pistols to be imported and sold commercially in 1986. It is believed that Glock designed and created this adjustable rear sight over a weekend in order to meet the ATF's importation requirements, and so it was dubbed the "weekend" sight. These first-generation adjustable rear sights extended past the slide and were susceptible to breaking.[77] Even on later models, the front sight can easily become misshapen from friction against the holster,[78] leading to replacements with metal sights, or tritium illuminated night sights.[79]

More commonly today, the Glock 17 has a fixed polymer combat-type sighting arrangement that consists of a ramped front sight and a notched rear sight with white contrast elements painted on for increased acquisition speed – a white dot on the front post and a rectangular border on the rear notch. Some newer rear sights can be adjusted for windage (on certain models due to the windage sights not coming as factory default), as it has a degree of lateral movement in the dovetail it is mounted in. Three other factory rear sight configurations are available in addition to the standard 6.5 mm (0.26 in) height sight: a lower impact 6.1 mm (0.24 in) sight, and two higher impact versions – 6.9 mm (0.27 in) and 7.3 mm (0.29 in).[80]

Accessories

The Glock pistol accessories available from the factory include several devices for tactical illumination, such as a series of front rail-mounted "Glock tactical lights" featuring a white tactical light and an optional visible laser sight. An alternate version of the tactical light using an invisible infrared light and laser sight is available, designed to be used with an infrared night vision device. Another lighting accessory is an adapter to mount a flashlight onto the bottom of a magazine.

Polymer holsters in various configurations and matching magazine pouches are available. In addition, Glock produces optional triggers, recoil springs, slide stops, magazine release levers, and maritime spring cups. Maritime spring cups are designed to allow the pistol to be fired immediately after being submerged in water. They feature additional openings that allow liquids to flow and escape around them, offering enhanced reliability when water has penetrated into the firing pin assembly channel.

Magazine floor plates (or +2 baseplates), which expand the capacity of the standard magazines by two rounds, are available for models chambered for the 9×19mm Parabellum, .45 GAP, .40 S&W, .357 SIG, and .380 ACP cartridges. In addition to the standard nonadjustable polymer sight line, three alternative sight lines are offered by Glock. These consist of steel, adjustable, and self-illuminating tritium night rear sights and factory steel and self-illuminating tritium contrast pointer steel front sights.

Glock switch

Main article: Glock switch

A Glock switch is an aftermarket accessory which depresses the firearm's sear allowing fully automatic fire. They are illegal in the United States.[81]

Commemorative, anniversary, engraved, and other rare Glocks

Glock began producing limited edition and commemorative Glocks in 1991. Glock later produced a series of anniversary models to celebrate business milestones and in honor of 20, 25, and 30 years of US sales. Additionally, many law enforcement agencies had the department name, logo, or badges engraved on the slides of issued duty weapons.[30]

Variants

Following the introduction of the Glock 17, numerous variants and versions have been offered. Variants that differ in caliber, frame, and slide length are identified by different model numbers with the exception of the Glock 17L, 19X, and 43X.

Glock pistols are made in five form factors, all modeled after the original full-sized Glock 17. "Standard" models are designed as full-sized duty firearms with a large magazine capacity. "Compact" models are slightly smaller with reduced magazine capacity and lighter weight while maintaining a usable grip length. "Subcompact" models are designed for easier carry and being lighter and shorter, are intended to be used with two fingers on the grip below the trigger guard and lack an accessory rail like the larger, after generation two, Glock models. The .45 ACP and 10mm Auto models have bigger, wider slides and are slightly larger than the smaller-chambered pistols and are available in the subcompact models Glock 29 (10mm Auto) and Glock 30 (.45 ACP). Glock produces five models of single-stack "Slimline" subcompact pistols, the Glock 36 in .45 ACP, the Glock 42 in .380 ACP, and the Glock 43, 43x, and 48 in 9×19mm. The 43x and the 48 have longer grips that allow for a full three-finger hold and a 10-round capacity. "Competition" versions have longer barrels and slides, adjustable sights, an extended slide and magazine release.

Beginning in 2007, Glock introduced several "Short Frame" models designated by the suffix "SF". The short frame was originally designed to compete in the now cancelled U.S. military Joint Combat Pistol trials for a new .45 ACP pistol to replace the M9 pistol. Glock's entry featured an optional ambidextrous magazine release and MIL-STD-1913 rail along with a reduction in the size of the backstrap. The Glock 21SF is currently available in three versions: one with a Picatinny rail and ambidextrous magazine release and two with a Universal Glock rail available with or without the ambidextrous magazine release. Current 10mm and .45 ACP Glock magazines are manufactured with ambidextrous magazine release cutouts. As of January 2009, the Glock 20, 21, 29, and 30 were offered in short-framed variations. These models incorporate a 2.5 mm (0.098 in) reduction in trigger reach, and full-sized models feature a 4 mm (0.16 in) reduction in heel depth, which corresponds to an overall reduction in length for those models.[82][83][84]

Glock Variants with normal frame width (slide size/grip size)
Caliber Subcompact (SC)/SC SC/Compact (C) C/C C/Standard (Std) Std/Std Competition/Std Long Slide/Std
9×19mm G26 G19,[a] G46 G19X, G45 G17, G18, G47,[b] P80 G34 G17L
10mm Auto G29 G20 G40
.45 ACP G30 G21 G41
.40 G27 G23 G22 G35 G24
.380 Auto G28 G25
.357 SIG G33 G32 G31
.45 G.A.P. G39 G38 G37
22 LR G44
Glock Variants with slimline frame width (slide size/grip size)
Caliber Subcompact (SC)/SC SC/Compact (C) C/C C/Standard (Std) Std/Std Competition/Std Long Slide/Std
9×19mm G43 (slim)[c] G43X (slim)[d] G48 (slim)[e]
.45 ACP G36 (slim)
.380 Auto G42 (slim)
  1. ^ G19 compact size slide is interchangeable with G47 standard size slide.
  2. ^ G47 standard size slide is interchangeable with G19 compact size slide.
  3. ^ G43 subcompact size slide is interchangeable with G43X subcompact and G48 compact slide.
  4. ^ G43X subcompact size slide is interchangeable with G43 subcomcact and G48 compact slide.
  5. ^ G48 compact size slide is interchangeable with subcompact slides of G43 and G43X.

9×19mm Parabellum

  • Glock 17: The Glock 17 is the original 9×19mm Parabellum model, with a standard magazine capacity of 17 rounds, introduced in 1982. Several modified versions of the Glock 17 have been introduced:
    • Glock 17L: Introduced in 1988, the 17L incorporates a longer slide and extended barrel. Initially, the Glock 17L had three holes in the top of the barrel and a corresponding slot in the slide; however, later production pistols lack the holes in the barrel. The Glock 17L is manufactured in limited quantities.
    • Glock 17C: Introduced in 1996, the 17C incorporates slots cut in the barrel and slide to compensate for recoil. Many other Glock pistols now come with this option, all with a "C" suffix on the slide.
    • Glock 17MB: The 17MB is a version with ambidextrous magazine catch. This model, along with the other MB variants, was no longer available upon the introduction of the fourth-generation models, which have a reversible magazine catch.
    • Glock 17M: Introduced in 2016, the 17M was created in response to an FBI solicitation for a new full-size 9mm pistol. Differences from the Generation 4 model include removal of the finger grooves, ambidextrous slide lock, rounded slide nose profile, flared magazine well with new magazine baseplates, and a tougher finish on metal components. The Glock 17M also abandons the polygonal rifling of previous models for conventional rifling.[85] As of 2017, the Federal Bureau of Investigation, the South Carolina Highway Patrol and the Ontario Provincial Police[86] have adopted the pistol as standard.
    • Glock P80: Introduced in 2020, the P80 was commissioned by United States firearms distributor Lipsey's to create an exclusive commemorative Glock model, the Pistole 80. The P80 is a throwback to the original Glock 17 Gen 1 type pistol chambered in 9×19mm with original Gen 1 frame and stippling and Gen 2 / Gen 3 internals.
  • Glock 18: The Glock 18 is a selective-fire variant of the Glock 17, developed at the request of the Austrian counter-terrorist unit EKO Cobra, and as a way to internally test Glock components under high strain conditions.[87] Originally produced in 1986, this machine pistol–class firearm has a lever-type fire-control selector switch, installed on the serrated portion of the rear left side of the slide. With the selector lever in the bottom position, the pistol fires fully automatically, and with the selector lever in the top position, the pistol fires semi-automatically. The firearm is typically used with an extended 33-round-capacity magazine, although other magazines from the Glock 17 can be used, with available capacities of 10, 17, 19 or 24 rounds. Unlike all its other pistols, it is only offered to military, law enforcement, and government organizations.[88] Early Glock 18 models were ported to reduce muzzle rise during automatic fire. A very early design introduced a longer ported barrel which was soon discarded as it would not fit in a holster. Another compensated variant was produced, known as the Glock 18C. It has a keyhole opening cut into the forward portion of the slide, similar to the opening on the Glock long-slide models, although the Glock 18 has a standard-length slide. The keyhole opening provides an area to allow the four, progressively larger (from back to front) compensator cuts machined into the barrel to vent the propellant gases upwards, affording more control over the rapid-firing machine pistol.
    • Glock 18C: The compensator cuts start about halfway back on the top of the barrel. The two rear cuts are narrower than the two front cuts. The slide is hollowed, or dished-out, in a rectangular pattern between the rear of the ejection port and the rear sight. The rate of fire in fully automatic mode is around 1,100–1,200 rounds per minute. Most of the other characteristics are equivalent to the Glock 17, although the slide, frame, and certain fire-control parts of the Glock 18 are not interchangeable with other Glock models.[89][90]
  • Glock 19: The Glock 19 is effectively a reduced-size Glock 17, called the "Compact" by the manufacturer. It was first produced in 1988, primarily for military and law enforcement. The Glock 19's barrel and pistol grip are shorter by about 12 mm (0.5 in) than the Glock 17, and it uses a magazine with a standard capacity of 15 rounds. The pistol is compatible with factory magazines from the Glock 17 and Glock 18, giving the Glock 19 available capacities of: 17 rounds (standard magazine with +2 extension), 10, 17, and 19 (standard Glock 17 magazine with +2), 24 and 26 (standard magazine with +2 extension) and the 31 (standard Glock 18 magazine with +2 removed) and 33 rounds of the Glock 18. To preserve the operational reliability of the short recoil system, the mass of the slide remains the same as in the Glock 17 from which it is derived. With the exception of the slide, frame, barrel, locking block, recoil spring, guide rod, and slide lock spring, all of the other components are interchangeable between the models 17 and 19. The Glock 19 Gen 4 MOS (Modular Optic System) has also been used by Special Operations Forces as the MK27 MOD 2.[91]
    • Glock 19X: The 19X is the civilian version of Glock's entry to the XM17 Modular Handgun System competition for the US Military. It features a Glock 19 slide with a Glock 17 frame in coyote color instead of the regular Glock black color. The frame includes a lanyard loop and a front lip in the magazine which purpose is to make changing magazines with gloves on easier, but this means the new Gen 5 17-round magazines cannot be used in the Glock 19X because the front lip will block the extended magazine floor plates from locking into the 19X's magazine well. This can be remedied by switching to a Gen 4–style magazine floor plate[92] or with a factory +2 extension. The 19X comes standard with night sights and includes one 17-round magazine and two 19-round magazines, all in coyote color. The Glock 19X has proven to be one of Glock's best selling pistols, with over 100,000 sold within 6 months of the 19X first being released.[93]
    • Glock 19M: Introduced in 2016, the 19M was created in response to an FBI solicitation for a new compact 9mm pistol. Differences from the Generation 4 model include removal of the finger grooves, ambidextrous slide lock, rounded slide nose profile, flared magazine well with new magazine baseplates, and a tougher finish on metal components. The Glock 19M also abandons the polygonal rifling of previous models for conventional rifling. The US Marine Corps fielded the Glock 19M, designated as the M007, to CID (Criminal Investigation Division) and Marine One personnel.[94]
    • Glock 19 Canadian: The limit for Restricted Class firearms in Canada is a 105mm barrel, so, due to its 102mm barrel, the standard Glock 19 is too short to be legal. Starting in 2017, a market specific Glock 19 has been sold in Canada with a 106mm barrel and a distinctive laser-engraved hollow maple leaf on the right side of the slide.[95][96]
 
The subcompact Glock 26 with tritium night sights in 9×19mm Parabellum.
  • Glock 26: The Glock 26 is a 9×19mm "subcompact" variant designed for concealed carry and was introduced in 1995, mainly for the civilian market. It has also been acquired by the US military and designated MK 26.[97][98][99] It features a smaller frame compared to the Glock 19, with a pistol grip that supports only two fingers, a shorter barrel and slide, and a double-stack magazine with a standard capacity of 10 rounds. A factory magazine with a +2 extension gives a capacity of 12 rounds. In addition, factory magazines from the Glock 17, Glock 18, and Glock 19, with capacities of 15, 17, 19, 24, 31 and 33 rounds, will function in the Glock 26. More than simply a "shortened" Glock 19, design of the subcompact Glock 26 required extensive rework of the frame, locking block, and spring assembly that features a dual recoil spring.
    • Glock 26 for U.S. Customs and Border Protection (CBP): This Glock is a Generation 5 Glock for the CBP that incorporates a flared magazine well with an extended, longer grip than that of the usual Gen 5 Glock 26. Moreover, the magazine well is flat across and has no bump as the Glock 25 Gen 5 or the G19X. In addition, it offers a Longer 11-round magazine.[100]
  • Glock 34: The Glock 34 is a competition version of the Glock 17. It is similar to its predecessor, the Glock 17L, but with a slightly shorter slide and barrel, to meet the maximum size requirements for many sanctioned action pistol sporting events. It was developed and produced in 1998, and compared to the Glock 17, features a 21 mm (0.8 in) longer barrel and slide. It has an extended magazine release, extended slide stop lever, 20 N (4.5 lbf) trigger pull, and an adjustable rear sight. The sides at the front of the slide are slanted instead of squared. Further, the top of the slide and parts of its inside are milled out, creating a conspicuous hole at the top designed to reduce front-end muzzle weight to better balance the pistol and reduce the overall weight of the slide.[101]
  • Glock 43: The Glock 43 is a "slimline" version of the subcompact Glock 26 that features an ultracompact slide and frame. The Glock 43 is the first Glock pistol to be manufactured with a single-stack 9×19mm Parabellum magazine, having a standard capacity of six rounds and being unique to the model. Unlike other subcompact Glock pistols, the Glock 43 cannot use factory magazines from its larger relatives due to its single-stack magazine design. It also does not allow the removal of the backplate grip as is possible on the 4th gen Glocks.
    • Glock 43X: The 43X is similar to the 43 except it has a longer and thicker grip for an increased magazine capacity of 10 rounds. The grip of the Glock 43X is comparable to the 48 and can be interchanged. Glock 43X magazines do not fit into the Glock 43, or vice versa. The 43X also features front slide serrations, a built-in extended beaver tail, a reversible magazine catch (similar to Gen 5 models), GMB rifling (again similar to Gen 5 models), and a two-tone finish (silver slide/black receiver).[102] In the E.U. the 43X comes with a rail.[103]
 
Glock 45 MOS.
  • Glock 45: The Glock 45 is a black colored version of the Glock 19X that incorporates Gen5 features catered for police use. The Glock 45 features a Glock 17 grip with a Glock 19 slide with front slide serrations. Unlike the Glock 19X, the Glock 45 features a flared magazine well like on the Gen 5 Glocks, but without the half moon cut at the front of the magazine well. The Gen 5 17-round magazines will work in the Glock 45, because unlike the 19X, the Glock 45 does not have the front lip on the magazine well that blocks the Gen 5 17-round magazine's extended floor plate from locking into the magazine well. The Glock 45 also deletes the lanyard loop found at the back of the grip on the 19X and comes standard with plastic sights instead of the night sights standard on the 19x.[104]
  • Glock 46: The Glock 46 is a "compact" version like the Glock 19. This model has a rotating barrel breech lock system.[105] It had been designed as option to bid for a service pistol, with law enforcement agencies in Germany at state and federal level in mind. The differing breech lock system makes it possible to disassemble the firearm without the need to press the trigger, but only with no projectile chambered. Also, enhanced drop-safety is a must – the model complies with the specifications in the German technical guideline (Technische Richtlinie "Pistole") for service pistols. Police in Saxony-Anhalt chose the Glock 46 TR among three competitors and are to receive up to 8,600 new pistols until 2021 for over 6,400 officers, replacing their ageing Pistole 6 (P6), a SIG Sauer P225 variant. The state of Saxony-Anhalt is the first introducing a pistol made by Glock as standard issue sidearm into its force.[106][107][108]
  • Glock 47: The Glock 47 is a full-sized MOS version created for U.S. Customs and Border Protection that has full parts compatibility with a Glock 19, meaning a G47 slide can be put on a G19 frame to give the G19 a longer slide, barrel, and sight radius, or a G19 slide can be put on a G47 frame to create a pistol the functions like a Glock 45. The G47 also comes with magazines that have an extra extended base plate.[109] G47 and G19 Gen5/MOS/MOD1/FS have modularity between both pistols. This means that the complete upper (Slide and Barrel) from G47 can be mounted on the G19 Frame and the complete upper (Slide and Barrel) from G19 can be mounted on G47 frame.[110]
  • Glock 48: The Glock 48 is a "slimline" version similar to the subcompact Glock 43 and 43X. All components of the Glock 48 are identical to the Glock 43X except the slide and barrel which are longer. The slides for the Glock 43, Glock 43X, and Glock 48 are functional on any of those three frames. The G48 features a 4.17-inch-long barrel, front slide serrations, a built-in extended beaver tail, a reversible magazine catch (similar to Gen 5 models), GMB rifling (again similar to Gen 5 models), a two-tone finish (silver slide/black receiver), and a magazine capacity of 10 rounds.[103] In the E.U., Glock offers the 48 and the 43X with a rail.[103]

9×21mm

 
Rare within the United States, a Glock 17 chambered in 9×21mm.
  • The 9×21mm pistol cartridge was adopted and commercialized by Israel Military Industries for those markets (such as in Italy, and Mexico) where military service cartridges like the 9×19mm Parabellum, are banned by law for civilian use. Glock produces the Model 17, and other models,[111] chambered in 9×21mm for these markets; however, Glock does not export or produce the 9×21mm pistols for the United States commercial market. This makes any 9×21mm Glock model a unique and highly desirable item for US firearm collectors. A limited number of 9×21mm Glocks have been imported to the US and are mostly held by collectors and gun enthusiasts.[112]

10mm Auto

 
The subcompact third-generation Glock 29 in 10mm Auto.

  • Glock 20: The Glock 20, introduced in 1991, was developed for the then-growing law enforcement and security forces market for the 10mm Auto. The pistol handles both full-power and reduced "FBI" loads that have reduced muzzle velocity. Due to the longer cartridge and higher pressures, the pistol is slightly larger than the Glock 17, having a roughly 2.5 mm (0.1 in) greater width and 7 mm (0.3 in) greater length. Though many small parts interchange with the Glock 17, with a close to 50% parts commonality, the major assemblies are scaled-up and do not interchange. The standard magazine capacity of the Glock 20 is 15 rounds. In 2009, Glock announced they would offer a 152 mm (6.0 in) barrel as a drop-in option.[82]
    • Glock 20SF: The 20SF is a version of the Glock 20 that uses the Short Frame (SF) which is based on the standard G20 frame (same width), but reduces the trigger reach from the back of the grip by 2.5 mm (0.098 in) and the heel of the pistol is shortened by 4 mm (0.16 in) so the trigger can be reached and operated better by users with relatively small hands.
  • Glock 29: The Glock 29 is a 10mm Auto equivalent of the subcompact Glock 26 introduced in 1997 along with the Glock 30 (.45 ACP). The pistol features a 96 mm (3.8 in) barrel and a standard magazine capacity of 10 rounds. Like other subcompact Glock pistols, the Glock 29 functions with the factory magazines from its related full-size model, giving an optional capacity of 15 rounds.
    • Glock 29SF: The 29SF version of the Glock 29 uses the SF which is based on the standard G29 frame (same width), but reduces the trigger reach from the back of the grip by 2.5 mm (0.098 in).
  • Glock 40: The Glock 40, introduced in 2015, is a 10mm Auto equivalent of the long-slide Glock 17L. The Glock 40 is only made with the "Gen4" frame and "MOS" (Modular Optic System) configuration.[113]

.45 ACP

 
The slim-frame Glock 36 in .45 ACP.

Glock pistols chambered for the .45 ACP (and the .45 GAP) feature octagonal polygonal rifling rather than the hexagonal-shaped bores used for models in most other chamberings.[114] Octagonal rifling provides a better gas seal in relatively large diameter rifled bores, since an octagon resembles a circle more closely than a hexagon.[69]

  • Glock 21: The Glock 21 is a .45 ACP version of the Glock 20 designed primarily for the American market.[115] Compared to the Glock 20 chambered in 10mm Auto, the slide of the Glock 21 is lighter to compensate for the lower-energy .45 ACP cartridge. The standard Glock 21 magazine is of the single-position-feed, staggered-column type with a capacity of 13 rounds.
    • Glock 21SF: The 21SF is a version of the Glock 21 that uses a Short Frame lower which is based on the standard G21 frame (same width), but reduces trigger reach from the back of the grip by 2.5 mm (0.098 in), and the heel of the pistol is shortened by 4 mm (0.16 in) so the trigger can be reached and operated better by users with smaller hands.
  • Glock 30: The Glock 30 is a .45 ACP version of the subcompact Glock 29, with a standard magazine capacity of 10 rounds. The factory magazine from the Glock 21, with a capacity of 13 rounds, will function in the Glock 30.
    • Glock 30SF: The 30SF is a version of the Glock 30 that uses a Short Frame lower which is based on the standard G30 frame (same width), but reduces trigger reach from the back of the grip by 2.5 mm (0.098 in). The G30SF accepts the same double-stack .45ACP magazines as the G30 and G21.[116]
    • Glock 30S: The 30S is a version of the Glock 30 that features a thin slide (same slide as the G36), a Short Frame lower, and a double stack magazine.[117] Like the G30, G30S magazines holds 10 rounds.[118]
  • Glock 36: The Glock 36 is a "slimline" version of the subcompact Glock 30 that features an ultracompact slide and frame and is chambered for the .45 ACP cartridge. The Glock 36 is the first Glock pistol to be manufactured with a single-stack magazine, having a standard capacity of six rounds and being unique to the model. The Glock 36 cannot use factory magazines from its larger relatives due to its single-stack magazine design.
  • Glock 41: The Glock 41 is a competition version of the Glock 21, much like what the G34 is in relation to the G17; it features a 5.3-inch barrel and an elongated slide. The Glock 41 is only made with the "Gen4" frame.[119]

.40 S&W

 
Glock 22 OD in .40 S&W with Coyote Brown frame.
 
The competition-oriented Glock 35 in .40 S&W.

As is typical of pistols chambered in .40 S&W, each of the standard Glock models (22, 23, and 27) may be easily converted to the corresponding .357 SIG chambering (Glock 31, 32, and 33, respectively) simply by replacing the barrel. No other parts need to be replaced, as the .40 S&W magazines will feed the .357 SIG rounds.

.380 ACP

 
The Glock 42, chambered in .380 ACP, is currently the smallest Glock handgun produced as of 2023. The Glock 42 was also the first Glock to be entirely manufactured domestically in the United States—due to import-export restrictions from Austria to the United States market.

The first two .380 ACP models are primarily intended for markets that prohibit civilian ownership of firearms chambered in military calibers such as 9×19mm Parabellum.[122] Despite this, they are legally prohibited from being sold to civilians in the United States due to being manufactured in Austria and not meeting the import restrictions based on their caliber.[123] They are also prohibited from ownership in Canada due to not meeting minimum barrel length requirements for handguns.

Due to the relatively low bolt thrust of the .380 ACP cartridge, the locked-breech design of the Glock 19 and Glock 26 was minimally modified for the Glock 25 and Glock 28 to implement unlocked breech operation. It operates via straight blowback of the slide. This required modification of the locking surfaces on the barrel, as well as a redesign of the former locking block. Unusual for a blowback design, the barrel is not fixed to the frame. It moves rearward in recoil until it is tilted below the slide, similar to the standard locked-breech system. The reduced size and mass of the Glock 42 required return to the Glock-standard locked-breech design.

  • Glock 25: The Glock 25 , introduced in 1995, is a blowback derivative of the compact (102 mm (4.0 in) barrel) Glock 19. The magazine capacity is 15 rounds. Standard fixed sight elevation is 6.9 mm, unlike the 6.5 mm elevation used for the 9×19mm models.[124]
  • Glock 28: The Glock 28 , introduced in 1997, is a blowback derivative of the subcompact (87 mm (3.4 in) barrel) Glock 26. The standard magazine capacity is 10 rounds, but the 15-round Glock 25 magazine will function in the Glock 28. Standard fixed-sight elevation is 6.9 mm, unlike the 6.5 mm elevation used for the 9×19mm Parabellum models.
  • Glock 42: The Glock 42 , introduced in 2014, is an all-new locked-breech "slimline" (83 mm (3.3 in) barrel) design. The single-stack magazine is unique to this model, with a capacity of six rounds. It is Glock's smallest model ever made and is manufactured in the US, which unlike the Glock 25 and 28, allows it to be sold in that market.

.357 SIG

 
The subcompact Glock 33 in .357 SIG.
  • Glock 31: The Glock 31 is a .357 SIG variant of the full-sized Glock 22. The standard magazine capacity of the Glock 31 is 15 rounds.
  • Glock 32: The Glock 32 is a .357 SIG variant of the compact Glock 23. The standard magazine capacity of the Glock 32 is 13 rounds.
  • Glock 33: The Glock 33 is a .357 SIG variant of the subcompact Glock 27. The standard magazine capacity of the Glock 33 is 9 rounds.

As is typical of pistols chambered in .357 SIG, each of the standard Glock models (31, 32, and 33) may be easily converted to the corresponding .40 S&W chambering (Glock 22, 23, and 27, respectively) simply by replacing the barrel. No other parts need to be replaced, as the .357 SIG magazines will feed the .40 S&W round.

.45 GAP

Glock pistols chambered for the .45 GAP (and the .45 ACP) feature octagonal polygonal rifling rather than the hexagonal-shaped bores used for models in most other chamberings.[114] Octagonal rifling provides a better gas seal in relatively large diameter rifled bores, since an octagon will have shorter sides and shallower angles than a hexagon.[69]

  • Glock 37: The Glock 37 is a .45 GAP version of the Glock 17. It uses a wider, beveled slide, larger barrel, and different magazine, but is otherwise similar to the Glock 17. The Glock 37 first appeared in 2003. It was designed to offer ballistic performance comparable with the .45 ACP in the frame size of the Glock 17. The concern with the size of the Glock 20/21 has been addressed by the Glock 36, 21SF, and 30SF, all of which featured reduced-size frames. The standard magazine capacity of the Glock 37 is 10 rounds.
  • Glock 38: The Glock 38 is a .45 GAP version of the compact Glock 19.[125] The standard magazine capacity of the Glock 38 is 8 rounds.
  • Glock 39: The Glock 39 is a .45 GAP version of the subcompact Glock 26. The standard magazine capacity of the Glock 39 is 6 rounds.

.22 LR

  • Glock 44: The Glock 44 is a .22 LR (Long Rifle) rimfire model based on the Glock 19. While the Glock 44 is similar in size as the Glock 19, the Glock 44 has a magazine capacity of 10 rounds and uses a simple blow-back mechanism instead of a locked breech mechanism used on nearly all other Glock pistols.[126] In addition, the Glock 44 is lighter than the G19, weighing in at just 12 ounces, and it retains Glock's popular polygonal rifling, which has been tested by Glock to work with lead .22 bullets. It uses a steel/polymer composite slide due to the lower slide weight needed for blowback.[127]

Production in other countries

 
Iraqi police firing 9 mm Glock handguns at a firing range.

Aside from the original Austrian company, Glock pistols are manufactured by the Glock Inc. subsidiary division located in the United States. Those batches are identical compared to the Austrian-made ones, but they are marked as "USA", instead of "AUSTRIA", on the slide. Glock 17 pistols are being assembled locally at army workshops of Uruguay to fulfill the needs of the national military services and law enforcement organizations.[128]

The 205th Armory in Taiwan produces a copy of the Glock 19, named the T97 pistol. The Taiwan-made Glocks were made to replace the Smith & Wesson Model 5906 used by the Taiwan police, but it ultimately did not enter service. Turkish company Akdal Arms produces a pistol named the Ghost TR01, which is heavily influenced by Glock pistols in its design.[129]

Russian firms such as Skat,[130][131] ORSIS,[132] and Izhmash[133] assemble three models of Glock pistols locally: the Glock 17, 34, and 35.

Clones

Third party frames and slides for Glock pistols began to appear in the early 2000s. This has led to "Glock" becoming a generic term encompassing pistols not made by Glock Ges.m.b.H. especially as expiring patents allowed for complete Glock clones to be made.[134] As of 2019 a large number of American companies produced Glock clones.[135]

There are three sidearms made by Iranian DIO's Shahid Kaveh Industry Complex which they call Ra'ad (has a safety selector, possibly an unlicensed copy of Glock 17), Glock 19 and Kaveh-17 (probably an improved Ra'ad, a variant of Glock 17S), which all of them are unlicensed clones of Glock pistols.[136] It is not known if they could make their way to Iranian military and replace the Browning Hi-Power, M1911 and SIG P226 pistols and they were possibly some prototypes and have never gone on mass production.[137]

The Tatmadaw of Myanmar have adopted a clone of the Glock 17 known as the MA5 MK II, which was first reported in 2018.[138] They are currently being manufactured and adopted for Myanmar's special forces units.[139]

In 2017, it was reported that Norinco was able to make a clone of the Glock 17[140] known as the NP-7 (or NP7).[141] The pistol was subcontracted to Hunan Ordnance Industry Group through the Hunan Ordnance and Light Weapons Research Institute.[142][143] Its features appear to be influenced by the fourth gen Glock 17.[144] The NP7 is being marketed for export sales.[144]

Unlicensed Glock clones are made in Pakistan's Khyber region,[145] which were first reported in 2018.[146][147]

Users

Country Organization Model
  Argentina Agrupacion de Fuerzas de Operaciones Especiales[148] 17, 19X
  Armenia National Police of Armenia[149] 17, 18
  Australia Royal Australian Air Force[150] 19, 26
Australian Federal Police,[151] New South Wales Police Force,[152] Queensland Police Service,[153] Western Australia Police Force,[154] Northern Territory Police Force,[155] Tasmania Police[156] 17, 19, 22, 23, 26, 27
  Austria Austrian Armed Forces (incl. Militärstreife)[157][158][159] 17 (Pistole 80), 18C, 26, 21
Bundespolizei,[160] EKO Cobra also G18 (Min. of Interior); Justizwache (Min. of Justice)[161] 17, 18, 19
  Azerbaijan For use with Special Military Services, 160 Glock pistols purchased in 2013.[162] 19
  Bangladesh Ordered by Bangladesh Army[163] 26
Used by SWAT of Bangladesh Police[164] 17
  Brazil Polícia Federal - Federal Police[165] 17, 19, 26
Polícia Rodoviária Federal – Federal Highway Police[166] 17, 17 MOS, 26
Polícia Militar do Estado de São Paulo - Military Police of São Paulo State[167] 22
Polícia Civil do Estado de São Paulo - Civil Police of São Paulo State[168] 22
Polícia Militar do Estado do Rio de Janeiro - Military Police of Rio de Janeiro State[169] 23
Polícia Militar do Estado do Espírito Santo - Military Police of Espírito Santo State[170] 17, 22
Polícia Militar do Estado da Bahia - Military Police of Bahia State[171] 22
1º Batalhão de Forças Especiais[172] 17, 21
  Canada Ontario Provincial Police (OPP);[86] Quebec Provincial Police – Sûreté du Québec (SQ)[157] 17, 17M, 19, 26
  China Special Police Units[173] 17
  Czech Republic 601st Special Forces Group;[174] nonstandard sidearm issued on international deployments[175] 17
  Denmark Sirius Dog Sled Patrol, Greenland[176] 20
  Ecuador National Police,[157] Various special police units such as the GOE and GIR[157] 17
  Estonia Police and Border Guard Board[177][178] 19
Estonian Special Operations Force[179] 19
  Finland Finnish Defence Forces[180] 17 (as 9.00 PIST 2008)
Finnish Police, primary service firearm;[181] Border Guard (Ministry of Interior)[180] 17
Criminal Sanctions Agency, Dept. of Corrections (Vankeinhoitolaitos) (Ministry of Justice)[180] —
  France French Armed Forces, G17 standard;[182][183][27][184][185] COM FST, Cdos Marine units[158][186] 17, 17 MOS, 19, 26, 34
  Georgia Mainly used by GSOF and some MIA units.[157][158] Became standard issue for Georgian Ministry of Internal Affairs forces in October 2021.[187] 17, 21, 26
  Germany Kampfschwimmer of the Bundeswehr, G17 issued under designation P9.[188][108] 17
Federal and State Police, tactical units (GSG 9, SEKs); Customs (ZUZ) - G17, G19, G26.[108] 17, 19, 26
State Police in Saxony-Anhalt - about 8,600 G46 TR, standard issue firearm.[108][106] 46
  Greece Ειδική Κατασταλτική Αντιτρομοκρατική Μονάδα (EKAM) unit of the Hellenic Police[189] 21
  Hong Kong Hong Kong Police Force (incl. special units SDU, CTRU, ASU, SBDIV),[157] ICAC, C&E Dept. 17, 19
  Iceland Iceland Crisis Response Unit (Ministry of Foreign Affairs)[190][191][192] —
Icelandic National Police,[190][191][192] Víkingasveitin units[190][191][192] (Ministry of Interiour) —
  India Standard Issue side arm for special forces Para (SF) (Army), MARCOS (Navy), National Security Guard (Min. of Home Aff.).[157] 17, 26
  Iraq Iraqi security forces - military and law enforcement forces (purchased 125,163 pistols)[193] 19
  Israel Israeli Defense Forces,[158] Israel Police 17, 19
  Jordan Royal Guard[157] —
  Kosovo Kosovo Police, Kosovo Security Force[194][195] 17
  Latvia Latvian Military,[158] standard issue pistols with Land Forces.[196][197][198] 17, 19, 21, 26
  Lithuania Lithuanian Armed Forces[158][199] 17
Lithuanian Police[200] 17, 19, 26
  Luxembourg Luxembourg Army[201] 17
Unité Spéciale de la Police of the Grand Ducal Police[202][203] 17, 26
  Malaysia Malaysian Armed Forces[204] 17, 19, 34
Malaysia Coast Guard (MMEA);[205] Royal Malaysia Police[204] (Ministry of Home Affairs) 17, 18, 19, 26, 34
Royal Malaysian Customs (Ministry of Finance)[206] 17, 19, 26, 43
  Mexico Armada de México (Navy)[157] 17
  Monaco Compagnie des Carabiniers du Prince[207][208] 17
  Montenegro Armed Forces of Montenegro, standard military sidearm.[209] 17
  Myanmar Used by Myanmar Army[178] and the Myanmar Police Special Task Force.[210] Manufactured locally as MA-1 MK-II.[211] MA5 MK II
  Netherlands Military of the Netherlands;[158][212][213] Royal Marechaussee (Min. of Defence) BSB sections Persoonsbeveiliging (PB), Observatie Team (OT) and Sky Marshals also use Glock 26.[214] 17, 18, 26
Dutch Police, standard issue firearm of the Dienst Speciale Interventies.[215][216][217] 17
  New Zealand New Zealand Defence Force[218] 17
New Zealand Police[219] (an "unarmed service", but are trained to use firearms) 17
  Norway Norwegian Armed Forces[157][158] 17 (P-80, P-80NM1, P-80NM2)
  Pakistan In use with Special Service Group units[220] 17, 19
  Philippines Armed Forces of the Philippines,[221] Philippine Army,[221] Philippine Marine Corps MARSOG,[222] Presidential Security Group (joint service unit)[157] 17, 21
National Intelligence Coordinating Agency, Philippine Drug Enforcement Agency[157] (Office of President)[157] —
National Bureau of Investigation (Dept. of Justice);[157] Philippine National Police (DILG)[157] 17
  Peru Peruvian Air Force, Peruvian Army, Peruvian Navy, Dirección Nacional Antidrogas. 17
  Poland Polish Armed Forces[158] 17
Border Guard;[223] Polish Police[224] (Ministry of Interior and Admin.) 17, 19, 26
  Portugal Portuguese Army;[225] Portuguese Marine Corps;[158][226] Maritime Police;[227] Military Judiciary Police;[228] (Ministry of National Defence) 17
Guarda Nacional Republicana;[226] Polícia de Segurança Pública;[229] Foreigners and Borders Service;[230] Municipal Police;[231] (Ministry of Internal Administration) 19, 19X
Judiciary Police;[232] Prison Guard;[233] (Ministry of Justice) 19, 26
  Romania Romanian Armed Forces[158] 17, 17L
  Russia Special Operations Forces[234] 17, 26
Federal Security Service (FSB);[235] Ministry of Internal Affairs (MVD), special forces[236][237] 17, 19
  Serbia Police of Serbia[238][239] 17, 19, 21, 35
  Singapore Singapore Police Force;[240] Prison Service (Ministry of Home Affairs)[241] 19
  Slovakia 5th Special Operations Regiment (Slovakia)[242] 17
Slovak Police Force[243]
  Spain Unidad Especial de Intervención (UEI) group of Spanish Civil Guard,[244]

Special Naval Warfare Force,[245] Army's Special Operations Command[246]

 17, 19, 43
  Sweden Swedish Armed Forces[158][247][248] 17 (Pistol 88, 88C, 88C2), 19 (Pistol 88B, 88D)
  Switzerland Swiss Armed Forces: Military Police, Swiss Grenadiers, ARD 10, FSK-17[249] 17, 26
Police (Gendarmerie) Cantonal of Geneva[250] 19
  Taiwan Various criminal investigation bureaus outside major cities[251] 19
  Thailand Royal Thai Police at least 2,238 G19,[157] G17 used by Arintharat 26, Naresuan 261 units[252] 17, 19
  Timor Leste National Police of East Timor[253] 19
  Tunisia Unité Spéciale – Garde Nationale[254] 17, 34
  Turkey Used by Special Forces Command.[255] 17, 19
  United Kingdom British Armed Forces[256] 17 (L131A1),[257][258] 17T (L132A1), 19 (L137A1)[258]
Specialist Firearms Command of the Metropolitan Police Service[259] 17, 17M, 19, 19M, 26[260]
Police Service of Northern Ireland;[261] Police Scotland Specialist Firearms Units[262] 17
  United States USSOCOM;[91][97][98][99]United States Marine Forces Special Operations Command;[263] United States Navy SEALs[264] 19, 19M, 26
U.S. Customs and Border Protection;[265][266] United States Coast Guard[267] (Dept. of Homeland Security) 19, 26, 47; 19
Federal Bureau of Investigation;[268] Bureau of Alcohol, Tobacco, Firearms and Explosives;[269] Drug Enforcement Administration[270] (Dept. of Justice) 17M, 19, 19M, 22, 23, 27
New York City Police Department;[271] New York State Police;[272] New York State University Police[273] 17, 19, 21, 22, 23, 27
New Jersey State Police;[274] Port Authority Police Department[275] 19
Kentucky State Police SRT[276] 27, 35
Kansas Highway Patrol[277] 17
Alaska State Troopers[278] 22
Douglas County Sheriff's Department, Douglas County Oregon[279] 18
Dallas Police Department[280] 17, 19
Houston Police Department[280] 17
  Uruguay Uruguayan National Army[281] 17
   Vatican City Swiss Guard[282] 19
Gendarmerie of Vatican City[282] 17
  Venezuela Venezuelan Armed Forces[157][158] 17
  Yemen Military of Yemen[283] 19

Criminal use in the US

Glock pistols have been used in mass shootings including the 1991 Luby's shooting, the 2007 Virginia Tech shooting, the 2011 Tucson shooting, the 2012 Aurora shooting, the 2012 Sandy Hook Elementary School shooting, the 2015 Charleston church shooting, the 2016 Orlando nightclub shooting, Pittsburgh synagogue shooting and the 2022 NYC subway shooting. Experts on gun control, mass shootings, and defense training have cited factors such as reliability, ease of use, and commonness. The criminal use of handguns including Glocks has led to calls for increased gun control in the United States.[284][285][286] This common usage, however, has been described by Paul M. Barrett to be a result of Glock's overall popularity and market presence in the US and that "this level of violence isn’t necessarily tied to a particular[,] to a brand". In the late 80s, gun control advocates had similarly focused on Glock pistols because of their magazine capacity (compared to six shot revolvers), but also their "futuristic, distinct appearance". They were singled out for restriction by some jurisdictions and were branded the "hijacker's special" based on the false assumption that they could bypass airport metal detectors because of their polymer frame. This was refuted in Congressional hearings by the ATF, FAA, and other organizations responsible for airline security, which proved embarrassing for the bans' advocates and provided significant publicity for Glock.[287][better source needed] In April 2022, Ilene Steur, a survivor of the 2022 NYC subway attack, sued Glock and its Austrian parent company for compensation for her physical injuries and emotional pain.[288]

See also

References

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February 06, 2023
glock, this, article, about, semi, automatic, pistol, other, uses, disambiguation, brand, polymer, framed, short, recoil, operated, locked, breech, semi, automatic, pistols, designed, produced, austrian, manufacturer, first, generation, full, size, model, adop. This article is about the semi automatic pistol For other uses see Glock disambiguation Glock is a brand of polymer framed short recoil operated locked breech semi automatic pistols designed and produced by Austrian manufacturer Glock Ges m b H GlockGlock 17 First generation full size model adopted in 1985 by the Norwegian military under the P80 designationTypeSemi automatic pistol Machine pistol Glock 18 Place of originAustriaService historyIn service1982 presentUsed bySee UsersProduction historyDesignerGaston GlockDesigned1979 1982ManufacturerGlock Ges m b H Produced1982 presentNo built20 000 000 as of 2020 1 VariantsSeeVariantsSpecificationsCartridge9 19mm Parabellum 10mm Auto 22 LR 357 SIG 380 ACP 40 S amp W 45 ACP 45 GAP With aftermarket conversion 50 GI 9 18mm Makarov 460 Rowland 400 Corbon 45 Super 40 Super 9 25mm DillonActionShort recoil locked breech tilting barrel straight blowback for Glock 25 28 and 44 Rate of fireGlock 18 Full Auto 1 100 1 200 RPM rounds per minute Muzzle velocity375 m s 1 230 ft s Glock 17 17C 18 18C 2 Effective firing range50 m 55 yd Glock 17 17C 18 18C 3 4 Feed system6 10 13 15 17 19 24 31 33 or 40 round 5 detachable box magazine or 50 or 100 round 6 detachable drum magazineThe firearm entered Austrian military and police service by 1982 after becoming the top performer in reliability and safety tests 7 Glock pistols have become the company s most profitable line of products and have been supplied to national armed forces security agencies and police forces in at least 48 countries 8 Glocks are also popular firearms among civilians for recreational and competition shooting home and self defense both in concealed or open carry 9 In 2020 the Glock 19 was the best selling pistol on GunBroker 10 Contents 1 History 1 1 Development 1 2 Product evolution 1 2 1 First generation models 1 2 2 Second generation models 1 2 3 Third generation models 1 2 4 Fourth generation models 1 2 4 1 2011 recoil spring assembly exchange program 1 2 5 M series 1 2 6 Fifth generation models 2 Design details 2 1 Operating mechanism 2 2 Features 2 3 Barrel 2 4 Safety 2 5 Feeding 2 6 Sights 2 7 Accessories 2 7 1 Glock switch 2 8 Commemorative anniversary engraved and other rare Glocks 3 Variants 3 1 9 19mm Parabellum 3 2 9 21mm 3 3 10mm Auto 3 4 45 ACP 3 5 40 S amp W 3 6 380 ACP 3 7 357 SIG 3 8 45 GAP 3 9 22 LR 4 Production in other countries 5 Clones 6 Users 7 Criminal use in the US 8 See also 9 References 9 1 Bibliography 10 Further reading 11 External linksHistory EditThe company s founder head engineer Gaston Glock had no experience with firearms design or manufacture at the time their first pistol the Glock 17 was being prototyped Glock had extensive experience in advanced synthetic polymers which was instrumental in the company s design of the first commercially successful line of pistols with a polymer frame 11 Glock introduced ferritic nitrocarburizing into the firearms industry as an anticorrosion surface treatment for metal gun parts 12 Development Edit In 1980 the Austrian Armed Forces announced that it would seek tenders for a new modern duty pistol to replace their World War II era Walther P38 handguns 7 The Federal Ministry of Defence of Austria formulated a list of 17 criteria for the new generation service pistol including requirements that it would be self loading fire the NATO standard 9 19mm Parabellum round the magazines were not to require any means of assistance for loading be secure against accidental discharge from shock strike and drop from a height of 2 m 6 ft 7 in onto a steel plate 7 After firing 15 000 rounds of standard ammunition the pistol was to be inspected for wear The pistol was to then be used to fire an overpressure test cartridge generating 5 000 bar 500 MPa 73 000 psi dubious discuss The normal maximum operating pressure Pmax for the 9 mm NATO is 2 520 bar 252 MPa 36 500 psi 13 Glock became aware of the Austrian Army s planned procurement and in 1982 assembled a team of Europe s leading handgun experts from military police and civilian sport shooting circles to define the most desirable characteristics in a combat pistol 7 Within three months Glock had developed a working prototype that combined proven mechanisms and traits from previous pistol designs 14 In addition the plan was to make extensive use of synthetic materials and modern manufacturing technologies which led to the Glock 17 becoming a cost effective candidate Several samples of the Glock 17 so named because it was the 17th patent procured by the company 15 were submitted for assessment trials in early 1982 and after passing all of the exhaustive endurance and abuse tests the Glock emerged as the winner 16 17 18 The handgun was adopted into service with the Austrian military and police forces in 1982 as the Pistole 80 P80 19 with an initial order for 25 000 guns 14 The Glock 17 outperformed eight different pistols from five other established manufacturers Heckler amp Koch of Germany offered their P7M8 P7M13 and P9S SIG Sauer of Switzerland bid with their P220 and P226 models Beretta of Italy submitted their model 92SB F FN Herstal of Belgium proposed an updated variant of the Browning Hi Power and the Austrian Steyr Mannlicher entered the competition with the GB 20 The results of the Austrian trials sparked a wave of interest in Western Europe and overseas particularly in the United States where a similar effort to select a service wide replacement for the M1911 had been going on since the late 1970s known as the Joint Service Small Arms Program In late 1983 the United States Department of Defense inquired about the Glock pistol and received four samples of the Glock 17 for unofficial evaluation 21 Glock was then invited to participate in the XM9 Personal Defense Pistol Trials but declined because the DOD specifications would require extensive retooling of production equipment and providing 35 test samples in an unrealistic time frame 21 In 1985 after joint Norwegian and Swedish trials from 1983 to 1985 the Glock 17 was accepted into service as the P80 in Norway and in 1988 as the Pistol 88 in Sweden where it surpassed all prior NATO durability standards 22 23 21 As a result the Glock 17 became a standard NATO classified sidearm and was granted a NATO Stock Number 1005 25 133 6775 21 By 1992 some 350 000 pistols had been sold in more than 45 countries including 250 000 in the United States alone 19 Starting in 2013 the British Armed Forces began replacing the Browning Hi Power pistol with the Glock 17 Gen 4 due to concerns about weight and the external safety of the Hi Power 24 The British preferred the Glock 17 Gen 4 over the Beretta Px4 Storm FN FNP Heckler amp Koch P30 SIG Sauer P226 Smith amp Wesson M amp P and Steyr M9A1 of which 19 pistols each all chambered in 9 19 mm Parabellum were entered in the R9GSP trials 25 26 The French Armed Forces FAF in 2020 began replacing their MAC Mle 1950 and to a lesser extent their PAMAS G1 pistols with Glock 17 Gen 5 models specifically made for the FAF 27 The French preferred the Glock 17 Gen 5 over the HS2000 and CZ P 10 offerings that also made it to the final selection phase 28 Product evolution Edit Glock has updated its basic design several times throughout its production history First generation models Edit A first generation Glock 17 with the slide locked back displaying its vertical barrel tilt The first generation Gen 1 Glock pistols are most notably recognized by their smoother pebble finish grip and finger groove less frames The Gen 1 frame pattern and design was used by Glock from 1982 through 1988 and pre dates the checkered grip patterns used in the second generation of Glock pistols The first Glock 17s imported to the US were serialized with an alpha numeric two letter prefix followed by three numbers stamped into the slide barrel and a small metal plate inserted into the bottom side of the polymer frame The first documented Glock 17s by serial number imported into the US were from the AF000 series in January 1986 followed by AH000 AK000 and AL000 29 These early Glock Gen 1 pistols serial number prefix AF through AM were also manufactured with a barrel that had a smaller overall diameter and thinner bore walls later known as pencil barrels These early Glock 17 pencil barrel pistols are considered rare and highly desirable by Glock collectors original research The barrels were later redesigned with thicker bore walls and manufacturing continued to evolve and improve the design of Glock pistols 30 Many of the first generation Glocks were shipped and sold in the iconic Tupperware style plastic boxes The earliest Glock boxes had ammunition storage compartments that allowed for 17 rounds of 9mm to be stored with the pistol This box design was later changed by Glock to meet BATF import requirements and the ammunition storage compartments were removed 30 Second generation models Edit A second generation Glock 17 identified by the checkering on the front and rear straps of the pistol grip and trigger guard A mid life upgrade to the Glock pistols involved the addition of checkering on the front strap and trigger guard and checkering and serrations to the back strap These versions introduced in 1988 were informally referred to as second generation models To meet American ATF regulations a steel plate with a stamped serial number was embedded into the receiver in front of the trigger guard In 1991 an integrated recoil spring assembly replaced the original two piece recoil spring and tube design The magazine was slightly modified changing the floorplate and fitting the follower spring with a resistance insert at its base citation needed Third generation models Edit A third generation Glock 17C identified by the addition of an extra cross pin above the trigger finger grooves a reshaped extractor that serves as a loaded chamber indicator and an accessory rail In 1998 the frame was further modified with an accessory rail called the Universal Glock rail similar to a picatinny rail to allow the mounting of laser sights tactical lights and other accessories Thumb rests on both sides of the frame and finger grooves on the front strap were added Glock pistols with these upgrades are informally referred to as early third generation models Later third generation models additionally featured a modified extractor that serves as a loaded chamber indicator and the locking block was enlarged along with the addition of an extra cross pin to aid the distribution of bolt thrust forces exerted by the locking block This cross pin is known as the locking block pin and is located above the trigger pin 31 The polymer frames of third generation models can be black flat dark earth or olive drab Besides that non firing dummy pistols P models and non firing dummy pistols with resetting triggers R models have a bright red frame and Simunition adapted practice pistols T models a bright blue frame for easy identification 32 In 2009 the Glock 22 RTF2 Rough Textured Frame 2 chambered in 40 S amp W was introduced This pistol featured a new checkering texture around the grip and new scalloped fish gill shaped serrations at the rear of the sides of the slide 33 34 Many of the existing models became available in the RTF2 version including the 31 32 23 21 and 19 Some of those did not have the fish gills original research Fourth generation models Edit A fourth generation Glock 17 identified by an enlarged and reversible magazine release catch modified rough texture frame grip checkering interchangeable backstraps and a Gen4 rollmark on the slide A fourth generation Glock 19 At the 2010 SHOT Show Glock presented the fourth generation now dubbed Gen4 by Glock itself 35 Updates centered on ergonomics and the recoil spring assembly The initial two fourth generation models announced were the full sized Glock 17 and Glock 22 chambered for the 9 19 mm Parabellum and 40 S amp W cartridges respectively The pistols were displayed with a modified rough textured frame grip checkering and interchangeable backstraps of different sizes Gen4 is rollmarked on the slide next to the model number to identify the fourth generation pistols The basic grip size of the fourth generation Glock pistols is slightly smaller compared to the previous design A punch is provided to remove the standard trigger housing pin and replace it with the longer cross pin needed to mount the medium or large backstrap that will increase the trigger distance by 2 mm 0 079 in or 4 mm 0 16 in With the medium backstrap installed the grip size is identical to the third generation pistols The magazine release catches are enlarged and reversible for left handed use 36 To use the exchangeable magazine release feature fourth generation Glock magazines have a notch cut on both sides of the magazine body Earlier versions of the magazines will not lock into the Gen4 pistols if the user has moved the magazine release button to be operated by a left handed user Gen4 magazines will work in older models 37 Mechanically fourth generation Glock pistols are fitted with a dual recoil spring assembly to help reduce perceived recoil and increase service life expectancy Earlier subcompact Glock models such as the Glock 26 and Glock 30 have already used a dual recoil spring assembly that was carried over to the fourth generation versions of those models The slide and barrel shelf have been resized and the front portion of the polymer frame has been widened and internally enlarged to accommodate the dual recoil spring assembly The trigger mechanism housing has also been modified to fit into the smaller sized grip space 38 39 40 41 42 The introduction of fourth generation Glock pistols continued in July 2010 when the Glock 19 and Glock 23 the reduced size compact versions of the Glock 17 and Glock 22 became available for retail 43 In late 2010 Glock continued the introduction of fourth generation models with the Glock 26 and Glock 27 subcompact variants In January 2013 more fourth generation Glock pistols were introduced commercially during the annual SHOT Show including the Glock 20 Generation 4 along with other fourth generation Glock models 2011 recoil spring assembly exchange program Edit In September 2011 Glock announced a recoil spring exchange program in which the manufacturer voluntarily offers to exchange the recoil spring assemblies of its fourth generation pistols with the exception of the subcompact Glock 26 and Glock 27 models sold before 22 July 2011 at no cost to ensure our products perform up to GLOCK s stringent standards according to the company 44 M series Edit On 29 June 2016 the United States Federal Bureau of Investigation FBI awarded a contract to Glock to provide new 9 19mm Parabellum chambered duty pistols 45 The solicitation specifications deviated from the specifications of Glock fourth generation models 46 In August 2016 the Indianapolis Metro Police Department IMPD started training with a batch of Glock 17M pistols The most obvious difference with the Glock third and fourth generation models on published images is the omission of finger grooves on the grip 47 In October of that year the IMPD issued a 17M voluntary recall following failures encountered while dry firing the pistols during training According to Major Riddle with the IMPD Glock is working to correct the problem and we hope to begin issuing the new 17Ms as soon as December 48 49 Fifth generation models Edit In August 2017 Glock presented the fifth generation or Gen 5 The revisions centered on ergonomics and improving reliability Many parts of fifth generation Glock pistols cannot be interchanged with those of the previous generations The two fifth generation models announced were the Glock 17 and Glock 19 chambered for the 9 19mm Parabellum Some conspicuous changes on the fifth generation models are ambidextrous slide stop levers DLC surface finish for barrel and slide a barrel featuring a revised style of polygonal rifling called the Glock Marksman Barrel by Glock a deeper recessed barrel crown omission of the finger grooves on the grip a flared magazine well and a reintroduction of a half moon shaped cutout on the bottom front of the grip The locking block pin located above the trigger pin that was introduced in the third generation is omitted Many internal parts were less conspicuously revised 50 51 52 53 54 Gen 5 is rollmarked on the slide next to the model number to identify the fifth generation pistols The Gen 5 slide can feature front serrations FS to provide an additional tactile traction surface choice The magazines were also revised for the fifth generation models the redesigned magazine floor plates feature a frontward protruding lip to offer grip for manual assisted extraction and the magazine follower 55 became orange colored for easier visual identification Design details EditOperating mechanism Edit The Glock 17 is a short recoil operated locked breech semi automatic pistol that uses a modified Browning cam lock system adapted from the Hi Power pistol 56 The firearm s locking mechanism uses a linkless vertically tilting barrel with a rectangular breech that locks into the ejection port cut out in the slide During the recoil stroke the barrel moves rearward initially locked together with the slide about 3 mm 0 12 in until the bullet leaves the barrel and chamber pressure drops to a safe level A ramped lug extension at the base of the barrel then interacts with a tapered locking block integrated into the frame forcing the barrel down and unlocking it from the slide This camming action terminates the barrel s movement while the slide continues back under recoil extracting and ejecting the spent cartridge casing The slide s uninterrupted rearward movement and counter recoil cycle are characteristic of the Browning system 57 Glock pistols incorporate a number of features intended to enhance reliability in adverse conditions such as utilizing advanced metal coatings stub slide guides instead of true frame rails and an unusual cocking mechanism wherein the trigger is partially responsible for cocking the striker 58 By relying partially on force from the shooter s trigger finger to cock the striker a Glock effectively reduces the load on the recoil spring as the slide moves forward into battery whereas almost all other striker fired pistols on the market rely fully on the recoil spring to cock the striker citation needed This design gives the recoil spring fewer tasks as the action cycles helping to ensure that sufficient energy is available to strip a new round from the magazine and achieve full battery even when the breech chamber and or magazine are heavily fouled For these and other reasons Glock pistols are commonly considered to be some of the most reliable striker fired semi automatic handguns available with some independent testing even showing a Glock taking a lead over a SIG Sauer P320 59 in a wet dry reliability test even though the latter was selected as the winner of the U S Army s MHS competition Features Edit A subcompact Glock 30 field stripped to its main groups with a 45 ACP round The slide features a spring loaded claw extractor and the stamped sheet metal ejector is pinned to the trigger mechanism housing 60 Pistols after 2002 have a reshaped extractor that serves as a loaded chamber indicator When a cartridge is present in the chamber a tactile metal edge protrudes slightly out immediately behind the ejection port on the right side of the slide 61 The striker firing mechanism has a spring loaded firing pin that is cocked in two stages that the firing pin spring powers The factory standard firing pin spring is rated at 24 N 5 4 lbf but by using a modified firing pin spring it can be increased to 28 N 6 3 lbf or to 31 N 7 0 lbf 62 When the pistol is charged the firing pin is in the half cock position As the trigger is pulled the firing pin is then fully cocked At the end of its travel the trigger bar is tilted downward by the connector releasing the firing pin to fire the cartridge The connector resets the trigger bar so that the firing pin will be captured in half cock at the end of the firing cycle This is known as a preset trigger mechanism referred to as the Safe action trigger by the manufacturer The connector ensures the pistol can only fire semiautomatically The factory standard two stage trigger has a trigger travel of 12 5 mm 0 49 in and is rated at 25 N 5 6 lbf but by using a modified connector it can be increased to 35 N 7 9 lbf or lowered to 20 N 4 5 lbf In response to a request made by American law enforcement agencies for a two stage trigger with increased trigger pull Glock introduced the NY1 New York trigger module which features a flat spring in a plastic housing that replaces the trigger bar s standard coil spring This trigger modification is available in two versions NY1 and NY2 that are rated at 25 N 5 6 lbf to 40 N 9 0 lbf and 32 N 7 2 lbf to 50 N 11 2 lbf respectively which require about 20 N 4 5 lbf to 30 N 6 7 lbf of force to disengage the safeties and another 10 N 2 2 lbf to 20 N 4 5 lbf in the second stage to fire a shot The Glock s frame magazine body and several other components are made from a high strength nylon based polymer invented by Gaston Glock called Polymer 2 63 This plastic was specially formulated to provide increased durability and is more resilient than carbon steel and most steel alloys Polymer 2 is resistant to shock caustic liquids and temperature extremes where traditional steel alloy frames would warp and become brittle 63 The injection molded frame contains four hardened steel guide rails for the slide two at the rear of the frame and the remaining pair above and in front of the trigger guard The trigger guard itself is squared off at the front and checkered The grip has an angle of 109 and a nonslip stippled surface on the sides and both the front and rear straps 64 The frame houses the locking block which is an investment casting that engages a 45 camming surface on the barrel s lower camming lug It is retained in the frame by a steel axis pin that holds the trigger and slide catch The trigger housing is held to the frame by means of a polymer pin A spring loaded sheet metal pressing serves as the slide catch which is secured from unintentional manipulation by a raised guard molded into the frame Because of its polymer construction there were initially fears that Glock pistols would be invisible to airport X ray machines making them easy to illegally import into the United States In actuality 84 of the gun s weight is from steel and Polymer 2 is visible to X ray machines The myth s prevalence is believed to be connected to a scene that perpetuated the myth in Die Hard 2 which released a few years after the Glock was invented 65 In 1988 the Undetectable Firearms Act was passed in the United States banning the manufacture or import of any gun that could pass undetected through a metal detector The Glock pistol has a relatively low slide profile which holds the barrel axis close to the shooter s hand and makes the pistol more comfortable to fire by reducing muzzle rise and allows for faster aim recovery in rapid firing sequences The rectangular slide is milled from a single block of ordnance grade steel using CNC machinery 66 The barrel and slide undergo two hardening processes prior to treatment with a proprietary nitriding process called Tenifer The Tenifer treatment is applied in a 500 C 932 F nitrate bath 63 The Tenifer finish is between 0 04 and 0 05 mm 0 0016 and 0 0020 in in thickness and is characterized by extreme resistance to wear and corrosion it penetrates the metal and treated parts have similar properties even below the surface to a certain depth 67 The Tenifer process produces a matte gray colored nonglare surface with a 64 Rockwell C hardness rating and a 99 resistance to salt water corrosion which meets or exceeds stainless steel specifications 66 making the Glock particularly suitable for individuals carrying the pistol concealed as the highly chloride resistant finish allows the pistol to better endure the effects of perspiration 67 Glock steel parts using the Tenifer treatment are more corrosion resistant than analogous gun parts having other finishes or treatments including Teflon bluing hard chrome plating or phosphates 67 During 2010 Glock switched from the salt bath nitriding Tenifer process to a not exactly disclosed gas nitriding process After applying the nitriding process a black Parkerized decorative surface finish is applied The underlying nitriding treatment will remain protecting these parts even if the decorative surface finish were to wear off 12 A fourth generation Glock 17 consists of 34 parts 62 For maintenance the pistol disassembles into five main groups the barrel slide frame magazine and recoil spring assembly The firearm is designed for the NATO standard 9 19mm Parabellum pistol cartridge but can use high power increased pressure P ammunition with either full metal jacket or jacketed hollow point projectiles Barrel Edit The hammer forged barrel has a female type polygonal rifling with a right hand twist The stabilization of the round is not by conventional rifling using lands and grooves but rather through a polygonal profile consisting of a series of six or eight interconnected noncircular segments only the 45 ACP and 45 GAP have octagonal polygonal rifling Each depressed segment within the interior of the barrel is the equivalent of a groove in a conventional barrel Thus the interior of the barrel consists of smooth arcs of steel rather than sharply defined slots Instead of using a traditional broaching machine to cut the rifling into the bore the hammer forging process involves beating a slowly rotating mandrel through the bore to obtain the hexagonal or octagonal shape 68 As a result the barrel s thickness in the area of each groove is not compromised as with conventional square cut barrels This has the advantage of providing a better gas seal behind the projectile as the bore has a slightly smaller diameter which translates into more efficient use of the combustion gases trapped behind the bullet 68 slightly greater consistency in muzzle velocities and increased accuracy and ease of maintenance 69 The newer lines of Glock pistols i e Gen5 G42 43 are equipped with the Glock Marksmanship Barrel or GMB While older barrels were somewhat difficult to identify a bullet as coming from a particular barrel with high enough reliability for evidentiary use the newer GMB ones are designed differently A study by Stephen Christen and Hans Rudolf Jordi published by Forensic Science International in February 2019 shows that the new GMB barrels leave more identifiably unique markings on the fired projectile These marks were more easily identified than previous pistol barrel markings and were sufficient for reliably tying a bullet to a particular barrel The study used a comparison microscope and an ABIS Evofinder 70 Safety Edit Glock pistols lack a traditional on off safety lever which Glock markets as an advantage especially to police departments as the user is able to fire immediately without separately manipulating a safety 71 Instead the pistols are designed with three independent safety mechanisms to prevent accidental discharge The system designated Safe Action by Glock consists of an external integrated trigger safety and two automatic internal safeties a firing pin safety and a drop safety 72 The external safety is a small inner lever contained in the trigger Pressing the lever activates the trigger bar and sheet metal connector The firing pin safety is a solid hardened steel pin that in the secured state blocks the firing pin channel disabling the firing pin in its longitudinal axis It is pushed upward to release the firing pin for firing only when the trigger is actuated and the safety is pushed up through the backward movement of the trigger bar The drop safety guides the trigger bar in a ramp that is released only when direct rearward pressure is applied to the trigger The three safety mechanisms are automatically disengaged one after the other when the trigger is squeezed and are automatically reactivated when the trigger is released 19 73 In 2003 Glock announced the Internal Locking System ILS safety feature named Glock Safety Lock 74 The ILS is a manually activated lock located in the back of the pistol s grip It is cylindrical in design and according to Glock each key is unique When activated the lock causes a tab to protrude from the rear of the grip giving both a visual and tactile indication as to whether the lock is engaged or not 75 When activated the ILS renders the Glock unfireable as well as making it impossible to disassemble When disengaged the ILS adds no further safety mechanisms to the Glock pistol The ILS is available as an option on most Glock pistols Glock pistols cannot be retrofitted to accommodate the ILS The lock must be factory built in Austria and shipped as a special order citation needed Feeding Edit A Glock 9 19mm Parabellum 17 round magazine The numbered witness holes at the back portion visually indicate how many cartridges are contained in the magazine The Glock 17 feeds from staggered column or double stack magazines that have a 17 round capacity which can be extended to 19 with an optional floor plate or optional 24 or 33 round high capacity magazines 76 For jurisdictions which restrict magazine capacity to 10 rounds Glock offers single stack 10 round magazines The magazines are made of steel and are overmolded with plastic A steel spring drives a plastic follower After the last cartridge has been fired the slide remains open on the slide stop The slide stop release lever is located on the left side of the frame directly beneath the slide and can be manipulated by the thumb of the right handed shooter Glock magazines are interchangeable between models of the same caliber meaning that a compact or subcompact pistol will accept magazines designed for the larger pistols chambered for the same round However magazines designed for compact and subcompact models will not function in larger pistols because they are not tall enough to reach the slide and magazine release For example the subcompact Glock 26 will accept magazines from both the full size Glock 17 and the compact Glock 19 but the Glock 17 will not accept magazines from the smaller Glock 19 or the Glock 26 The magazines for the Glock 36 the Glock 42 the Glock 43 and the Glock 44 are all unique they cannot use magazines intended for another model nor can their magazines be used in other models Sights Edit Standard sighting arrangement of a first generation Glock 17 The first Glock pistols sent to the United States in 1985 failed to meet the BATF import points requirement requiring Glock to quickly develop an adjustable rear sight which allowed for the pistols to be imported and sold commercially in 1986 It is believed that Glock designed and created this adjustable rear sight over a weekend in order to meet the ATF s importation requirements and so it was dubbed the weekend sight These first generation adjustable rear sights extended past the slide and were susceptible to breaking 77 Even on later models the front sight can easily become misshapen from friction against the holster 78 leading to replacements with metal sights or tritium illuminated night sights 79 More commonly today the Glock 17 has a fixed polymer combat type sighting arrangement that consists of a ramped front sight and a notched rear sight with white contrast elements painted on for increased acquisition speed a white dot on the front post and a rectangular border on the rear notch Some newer rear sights can be adjusted for windage on certain models due to the windage sights not coming as factory default as it has a degree of lateral movement in the dovetail it is mounted in Three other factory rear sight configurations are available in addition to the standard 6 5 mm 0 26 in height sight a lower impact 6 1 mm 0 24 in sight and two higher impact versions 6 9 mm 0 27 in and 7 3 mm 0 29 in 80 Accessories Edit The Glock pistol accessories available from the factory include several devices for tactical illumination such as a series of front rail mounted Glock tactical lights featuring a white tactical light and an optional visible laser sight An alternate version of the tactical light using an invisible infrared light and laser sight is available designed to be used with an infrared night vision device Another lighting accessory is an adapter to mount a flashlight onto the bottom of a magazine Polymer holsters in various configurations and matching magazine pouches are available In addition Glock produces optional triggers recoil springs slide stops magazine release levers and maritime spring cups Maritime spring cups are designed to allow the pistol to be fired immediately after being submerged in water They feature additional openings that allow liquids to flow and escape around them offering enhanced reliability when water has penetrated into the firing pin assembly channel Magazine floor plates or 2 baseplates which expand the capacity of the standard magazines by two rounds are available for models chambered for the 9 19mm Parabellum 45 GAP 40 S amp W 357 SIG and 380 ACP cartridges In addition to the standard nonadjustable polymer sight line three alternative sight lines are offered by Glock These consist of steel adjustable and self illuminating tritium night rear sights and factory steel and self illuminating tritium contrast pointer steel front sights Glock switch Edit Main article Glock switch A Glock switch is an aftermarket accessory which depresses the firearm s sear allowing fully automatic fire They are illegal in the United States 81 Commemorative anniversary engraved and other rare Glocks Edit Glock began producing limited edition and commemorative Glocks in 1991 Glock later produced a series of anniversary models to celebrate business milestones and in honor of 20 25 and 30 years of US sales Additionally many law enforcement agencies had the department name logo or badges engraved on the slides of issued duty weapons 30 Variants EditFollowing the introduction of the Glock 17 numerous variants and versions have been offered Variants that differ in caliber frame and slide length are identified by different model numbers with the exception of the Glock 17L 19X and 43X Glock pistols are made in five form factors all modeled after the original full sized Glock 17 Standard models are designed as full sized duty firearms with a large magazine capacity Compact models are slightly smaller with reduced magazine capacity and lighter weight while maintaining a usable grip length Subcompact models are designed for easier carry and being lighter and shorter are intended to be used with two fingers on the grip below the trigger guard and lack an accessory rail like the larger after generation two Glock models The 45 ACP and 10mm Auto models have bigger wider slides and are slightly larger than the smaller chambered pistols and are available in the subcompact models Glock 29 10mm Auto and Glock 30 45 ACP Glock produces five models of single stack Slimline subcompact pistols the Glock 36 in 45 ACP the Glock 42 in 380 ACP and the Glock 43 43x and 48 in 9 19mm The 43x and the 48 have longer grips that allow for a full three finger hold and a 10 round capacity Competition versions have longer barrels and slides adjustable sights an extended slide and magazine release Beginning in 2007 Glock introduced several Short Frame models designated by the suffix SF The short frame was originally designed to compete in the now cancelled U S military Joint Combat Pistol trials for a new 45 ACP pistol to replace the M9 pistol Glock s entry featured an optional ambidextrous magazine release and MIL STD 1913 rail along with a reduction in the size of the backstrap The Glock 21SF is currently available in three versions one with a Picatinny rail and ambidextrous magazine release and two with a Universal Glock rail available with or without the ambidextrous magazine release Current 10mm and 45 ACP Glock magazines are manufactured with ambidextrous magazine release cutouts As of January 2009 the Glock 20 21 29 and 30 were offered in short framed variations These models incorporate a 2 5 mm 0 098 in reduction in trigger reach and full sized models feature a 4 mm 0 16 in reduction in heel depth which corresponds to an overall reduction in length for those models 82 83 84 Glock Variants with normal frame width slide size grip size Caliber Subcompact SC SC SC Compact C C C C Standard Std Std Std Competition Std Long Slide Std9 19mm G26 G19 a G46 G19X G45 G17 G18 G47 b P80 G34 G17L10mm Auto G29 G20 G40 45 ACP G30 G21 G41 40 G27 G23 G22 G35 G24 380 Auto G28 G25 357 SIG G33 G32 G31 45 G A P G39 G38 G3722 LR G44Glock Variants with slimline frame width slide size grip size Caliber Subcompact SC SC SC Compact C C C C Standard Std Std Std Competition Std Long Slide Std9 19mm G43 slim c G43X slim d G48 slim e 45 ACP G36 slim 380 Auto G42 slim G19 compact size slide is interchangeable with G47 standard size slide G47 standard size slide is interchangeable with G19 compact size slide G43 subcompact size slide is interchangeable with G43X subcompact and G48 compact slide G43X subcompact size slide is interchangeable with G43 subcomcact and G48 compact slide G48 compact size slide is interchangeable with subcompact slides of G43 and G43X 9 19mm Parabellum Edit Glock 17 The Glock 17 is the original 9 19mm Parabellum model with a standard magazine capacity of 17 rounds introduced in 1982 Several modified versions of the Glock 17 have been introduced Glock 17L Introduced in 1988 the 17L incorporates a longer slide and extended barrel Initially the Glock 17L had three holes in the top of the barrel and a corresponding slot in the slide however later production pistols lack the holes in the barrel The Glock 17L is manufactured in limited quantities Glock 17C Introduced in 1996 the 17C incorporates slots cut in the barrel and slide to compensate for recoil Many other Glock pistols now come with this option all with a C suffix on the slide Glock 17MB The 17MB is a version with ambidextrous magazine catch This model along with the other MB variants was no longer available upon the introduction of the fourth generation models which have a reversible magazine catch Glock 17M Introduced in 2016 the 17M was created in response to an FBI solicitation for a new full size 9mm pistol Differences from the Generation 4 model include removal of the finger grooves ambidextrous slide lock rounded slide nose profile flared magazine well with new magazine baseplates and a tougher finish on metal components The Glock 17M also abandons the polygonal rifling of previous models for conventional rifling 85 As of 2017 update the Federal Bureau of Investigation the South Carolina Highway Patrol and the Ontario Provincial Police 86 have adopted the pistol as standard Glock P80 Introduced in 2020 the P80 was commissioned by United States firearms distributor Lipsey s to create an exclusive commemorative Glock model the Pistole 80 The P80 is a throwback to the original Glock 17 Gen 1 type pistol chambered in 9 19mm with original Gen 1 frame and stippling and Gen 2 Gen 3 internals Glock 18 The Glock 18 is a selective fire variant of the Glock 17 developed at the request of the Austrian counter terrorist unit EKO Cobra and as a way to internally test Glock components under high strain conditions 87 Originally produced in 1986 this machine pistol class firearm has a lever type fire control selector switch installed on the serrated portion of the rear left side of the slide With the selector lever in the bottom position the pistol fires fully automatically and with the selector lever in the top position the pistol fires semi automatically The firearm is typically used with an extended 33 round capacity magazine although other magazines from the Glock 17 can be used with available capacities of 10 17 19 or 24 rounds Unlike all its other pistols it is only offered to military law enforcement and government organizations 88 Early Glock 18 models were ported to reduce muzzle rise during automatic fire A very early design introduced a longer ported barrel which was soon discarded as it would not fit in a holster Another compensated variant was produced known as the Glock 18C It has a keyhole opening cut into the forward portion of the slide similar to the opening on the Glock long slide models although the Glock 18 has a standard length slide The keyhole opening provides an area to allow the four progressively larger from back to front compensator cuts machined into the barrel to vent the propellant gases upwards affording more control over the rapid firing machine pistol Glock 18C The compensator cuts start about halfway back on the top of the barrel The two rear cuts are narrower than the two front cuts The slide is hollowed or dished out in a rectangular pattern between the rear of the ejection port and the rear sight The rate of fire in fully automatic mode is around 1 100 1 200 rounds per minute Most of the other characteristics are equivalent to the Glock 17 although the slide frame and certain fire control parts of the Glock 18 are not interchangeable with other Glock models 89 90 Glock 19 The Glock 19 is effectively a reduced size Glock 17 called the Compact by the manufacturer It was first produced in 1988 primarily for military and law enforcement The Glock 19 s barrel and pistol grip are shorter by about 12 mm 0 5 in than the Glock 17 and it uses a magazine with a standard capacity of 15 rounds The pistol is compatible with factory magazines from the Glock 17 and Glock 18 giving the Glock 19 available capacities of 17 rounds standard magazine with 2 extension 10 17 and 19 standard Glock 17 magazine with 2 24 and 26 standard magazine with 2 extension and the 31 standard Glock 18 magazine with 2 removed and 33 rounds of the Glock 18 To preserve the operational reliability of the short recoil system the mass of the slide remains the same as in the Glock 17 from which it is derived With the exception of the slide frame barrel locking block recoil spring guide rod and slide lock spring all of the other components are interchangeable between the models 17 and 19 The Glock 19 Gen 4 MOS Modular Optic System has also been used by Special Operations Forces as the MK27 MOD 2 91 Glock 19X proposed by Glock Ges m b H for XM17 Modular Handgun System competition Glock 19X The 19X is the civilian version of Glock s entry to the XM17 Modular Handgun System competition for the US Military It features a Glock 19 slide with a Glock 17 frame in coyote color instead of the regular Glock black color The frame includes a lanyard loop and a front lip in the magazine which purpose is to make changing magazines with gloves on easier but this means the new Gen 5 17 round magazines cannot be used in the Glock 19X because the front lip will block the extended magazine floor plates from locking into the 19X s magazine well This can be remedied by switching to a Gen 4 style magazine floor plate 92 or with a factory 2 extension The 19X comes standard with night sights and includes one 17 round magazine and two 19 round magazines all in coyote color The Glock 19X has proven to be one of Glock s best selling pistols with over 100 000 sold within 6 months of the 19X first being released 93 Glock 19M Introduced in 2016 the 19M was created in response to an FBI solicitation for a new compact 9mm pistol Differences from the Generation 4 model include removal of the finger grooves ambidextrous slide lock rounded slide nose profile flared magazine well with new magazine baseplates and a tougher finish on metal components The Glock 19M also abandons the polygonal rifling of previous models for conventional rifling The US Marine Corps fielded the Glock 19M designated as the M007 to CID Criminal Investigation Division and Marine One personnel 94 Glock 19 Canadian The limit for Restricted Class firearms in Canada is a 105mm barrel so due to its 102mm barrel the standard Glock 19 is too short to be legal Starting in 2017 a market specific Glock 19 has been sold in Canada with a 106mm barrel and a distinctive laser engraved hollow maple leaf on the right side of the slide 95 96 The subcompact Glock 26 with tritium night sights in 9 19mm Parabellum Glock 26 The Glock 26 is a 9 19mm subcompact variant designed for concealed carry and was introduced in 1995 mainly for the civilian market It has also been acquired by the US military and designated MK 26 97 98 99 It features a smaller frame compared to the Glock 19 with a pistol grip that supports only two fingers a shorter barrel and slide and a double stack magazine with a standard capacity of 10 rounds A factory magazine with a 2 extension gives a capacity of 12 rounds In addition factory magazines from the Glock 17 Glock 18 and Glock 19 with capacities of 15 17 19 24 31 and 33 rounds will function in the Glock 26 More than simply a shortened Glock 19 design of the subcompact Glock 26 required extensive rework of the frame locking block and spring assembly that features a dual recoil spring Glock 26 for U S Customs and Border Protection CBP This Glock is a Generation 5 Glock for the CBP that incorporates a flared magazine well with an extended longer grip than that of the usual Gen 5 Glock 26 Moreover the magazine well is flat across and has no bump as the Glock 25 Gen 5 or the G19X In addition it offers a Longer 11 round magazine 100 Glock 34 The Glock 34 is a competition version of the Glock 17 It is similar to its predecessor the Glock 17L but with a slightly shorter slide and barrel to meet the maximum size requirements for many sanctioned action pistol sporting events It was developed and produced in 1998 and compared to the Glock 17 features a 21 mm 0 8 in longer barrel and slide It has an extended magazine release extended slide stop lever 20 N 4 5 lbf trigger pull and an adjustable rear sight The sides at the front of the slide are slanted instead of squared Further the top of the slide and parts of its inside are milled out creating a conspicuous hole at the top designed to reduce front end muzzle weight to better balance the pistol and reduce the overall weight of the slide 101 Glock 43 The Glock 43 is a slimline version of the subcompact Glock 26 that features an ultracompact slide and frame The Glock 43 is the first Glock pistol to be manufactured with a single stack 9 19mm Parabellum magazine having a standard capacity of six rounds and being unique to the model Unlike other subcompact Glock pistols the Glock 43 cannot use factory magazines from its larger relatives due to its single stack magazine design It also does not allow the removal of the backplate grip as is possible on the 4th gen Glocks Glock 43X The 43X is similar to the 43 except it has a longer and thicker grip for an increased magazine capacity of 10 rounds The grip of the Glock 43X is comparable to the 48 and can be interchanged Glock 43X magazines do not fit into the Glock 43 or vice versa The 43X also features front slide serrations a built in extended beaver tail a reversible magazine catch similar to Gen 5 models GMB rifling again similar to Gen 5 models and a two tone finish silver slide black receiver 102 In the E U the 43X comes with a rail 103 Glock 45 MOS Glock 45 The Glock 45 is a black colored version of the Glock 19X that incorporates Gen5 features catered for police use The Glock 45 features a Glock 17 grip with a Glock 19 slide with front slide serrations Unlike the Glock 19X the Glock 45 features a flared magazine well like on the Gen 5 Glocks but without the half moon cut at the front of the magazine well The Gen 5 17 round magazines will work in the Glock 45 because unlike the 19X the Glock 45 does not have the front lip on the magazine well that blocks the Gen 5 17 round magazine s extended floor plate from locking into the magazine well The Glock 45 also deletes the lanyard loop found at the back of the grip on the 19X and comes standard with plastic sights instead of the night sights standard on the 19x 104 Glock 46 The Glock 46 is a compact version like the Glock 19 This model has a rotating barrel breech lock system 105 It had been designed as option to bid for a service pistol with law enforcement agencies in Germany at state and federal level in mind The differing breech lock system makes it possible to disassemble the firearm without the need to press the trigger but only with no projectile chambered Also enhanced drop safety is a must the model complies with the specifications in the German technical guideline Technische Richtlinie Pistole for service pistols Police in Saxony Anhalt chose the Glock 46 TR among three competitors and are to receive up to 8 600 new pistols until 2021 for over 6 400 officers replacing their ageing Pistole 6 P6 a SIG Sauer P225 variant The state of Saxony Anhalt is the first introducing a pistol made by Glock as standard issue sidearm into its force 106 107 108 Glock 47 The Glock 47 is a full sized MOS version created for U S Customs and Border Protection that has full parts compatibility with a Glock 19 meaning a G47 slide can be put on a G19 frame to give the G19 a longer slide barrel and sight radius or a G19 slide can be put on a G47 frame to create a pistol the functions like a Glock 45 The G47 also comes with magazines that have an extra extended base plate 109 G47 and G19 Gen5 MOS MOD1 FS have modularity between both pistols This means that the complete upper Slide and Barrel from G47 can be mounted on the G19 Frame and the complete upper Slide and Barrel from G19 can be mounted on G47 frame 110 Glock 48 The Glock 48 is a slimline version similar to the subcompact Glock 43 and 43X All components of the Glock 48 are identical to the Glock 43X except the slide and barrel which are longer The slides for the Glock 43 Glock 43X and Glock 48 are functional on any of those three frames The G48 features a 4 17 inch long barrel front slide serrations a built in extended beaver tail a reversible magazine catch similar to Gen 5 models GMB rifling again similar to Gen 5 models a two tone finish silver slide black receiver and a magazine capacity of 10 rounds 103 In the E U Glock offers the 48 and the 43X with a rail 103 9 21mm Edit Rare within the United States a Glock 17 chambered in 9 21mm The 9 21mm pistol cartridge was adopted and commercialized by Israel Military Industries for those markets such as in Italy and Mexico where military service cartridges like the 9 19mm Parabellum are banned by law for civilian use Glock produces the Model 17 and other models 111 chambered in 9 21mm for these markets however Glock does not export or produce the 9 21mm pistols for the United States commercial market This makes any 9 21mm Glock model a unique and highly desirable item for US firearm collectors A limited number of 9 21mm Glocks have been imported to the US and are mostly held by collectors and gun enthusiasts 112 10mm Auto Edit The subcompact third generation Glock 29 in 10mm Auto Glock 20 The Glock 20 introduced in 1991 was developed for the then growing law enforcement and security forces market for the 10mm Auto The pistol handles both full power and reduced FBI loads that have reduced muzzle velocity Due to the longer cartridge and higher pressures the pistol is slightly larger than the Glock 17 having a roughly 2 5 mm 0 1 in greater width and 7 mm 0 3 in greater length Though many small parts interchange with the Glock 17 with a close to 50 parts commonality the major assemblies are scaled up and do not interchange The standard magazine capacity of the Glock 20 is 15 rounds In 2009 Glock announced they would offer a 152 mm 6 0 in barrel as a drop in option 82 Glock 20SF The 20SF is a version of the Glock 20 that uses the Short Frame SF which is based on the standard G20 frame same width but reduces the trigger reach from the back of the grip by 2 5 mm 0 098 in and the heel of the pistol is shortened by 4 mm 0 16 in so the trigger can be reached and operated better by users with relatively small hands Glock 29 The Glock 29 is a 10mm Auto equivalent of the subcompact Glock 26 introduced in 1997 along with the Glock 30 45 ACP The pistol features a 96 mm 3 8 in barrel and a standard magazine capacity of 10 rounds Like other subcompact Glock pistols the Glock 29 functions with the factory magazines from its related full size model giving an optional capacity of 15 rounds Glock 29SF The 29SF version of the Glock 29 uses the SF which is based on the standard G29 frame same width but reduces the trigger reach from the back of the grip by 2 5 mm 0 098 in Glock 40 The Glock 40 introduced in 2015 is a 10mm Auto equivalent of the long slide Glock 17L The Glock 40 is only made with the Gen4 frame and MOS Modular Optic System configuration 113 45 ACP Edit The slim frame Glock 36 in 45 ACP Glock pistols chambered for the 45 ACP and the 45 GAP feature octagonal polygonal rifling rather than the hexagonal shaped bores used for models in most other chamberings 114 Octagonal rifling provides a better gas seal in relatively large diameter rifled bores since an octagon resembles a circle more closely than a hexagon 69 Glock 21 The Glock 21 is a 45 ACP version of the Glock 20 designed primarily for the American market 115 Compared to the Glock 20 chambered in 10mm Auto the slide of the Glock 21 is lighter to compensate for the lower energy 45 ACP cartridge The standard Glock 21 magazine is of the single position feed staggered column type with a capacity of 13 rounds Glock 21SF The 21SF is a version of the Glock 21 that uses a Short Frame lower which is based on the standard G21 frame same width but reduces trigger reach from the back of the grip by 2 5 mm 0 098 in and the heel of the pistol is shortened by 4 mm 0 16 in so the trigger can be reached and operated better by users with smaller hands Glock 30 The Glock 30 is a 45 ACP version of the subcompact Glock 29 with a standard magazine capacity of 10 rounds The factory magazine from the Glock 21 with a capacity of 13 rounds will function in the Glock 30 Glock 30SF The 30SF is a version of the Glock 30 that uses a Short Frame lower which is based on the standard G30 frame same width but reduces trigger reach from the back of the grip by 2 5 mm 0 098 in The G30SF accepts the same double stack 45ACP magazines as the G30 and G21 116 Glock 30S The 30S is a version of the Glock 30 that features a thin slide same slide as the G36 a Short Frame lower and a double stack magazine 117 Like the G30 G30S magazines holds 10 rounds 118 Glock 36 The Glock 36 is a slimline version of the subcompact Glock 30 that features an ultracompact slide and frame and is chambered for the 45 ACP cartridge The Glock 36 is the first Glock pistol to be manufactured with a single stack magazine having a standard capacity of six rounds and being unique to the model The Glock 36 cannot use factory magazines from its larger relatives due to its single stack magazine design Glock 41 The Glock 41 is a competition version of the Glock 21 much like what the G34 is in relation to the G17 it features a 5 3 inch barrel and an elongated slide The Glock 41 is only made with the Gen4 frame 119 40 S amp W Edit Glock 22 OD in 40 S amp W with Coyote Brown frame The competition oriented Glock 35 in 40 S amp W Glock 22 The Glock 22 is a 40 S amp W version of the full sized Glock 17 introduced in 1990 The pistol uses a modified slide frame and barrel to account for the differences in size and power of the 40 S amp W cartridge The standard magazine capacity is 15 rounds The Glock Model 22 is favored and used by multiple law enforcement agencies around the world including the Baltimore Police Department Los Angeles Police Department Miami Police Department Maryland State Police Overland Park Police Department Kansas City Police Department Missouri State Highway Patrol and Alaska State Troopers in the United States the NSW Police Force Queensland Police Service and the Northern Territory Police Force in Australia the Edmonton Police Service Calgary Police Service Alberta Sheriffs Branch Winnipeg Police Service Toronto Police Service Ottawa Police Service and British Columbia Sheriff Service in Canada and the National Bureau of Investigation Philippines among others Glock 23 The Glock 23 is a 40 S amp W version of the compact Glock 19 It is dimensionally identical to the Glock 19 but is slightly heavier and uses a modified slide frame 40 S amp W barrel and a standard magazine capacity of 13 rounds The factory 15 round magazine from the larger Glock 22 will function in the Glock 23 Glock 24 The Glock 24 is a 40 S amp W long slide variant of the Glock 22 similar in concept to the Glock 17L Additionally a compensated ported barrel version designated the 24C was also produced The Glock 24 was introduced in 1994 and officially dropped from the company s regular product lineup upon the release of the Glock 34 and 35 120 Glock 27 The Glock 27 is a 40 S amp W version of the subcompact Glock 26 with a standard magazine capacity of 9 rounds The factory magazines from the larger Glock 22 and 23 will function in the Glock 27 increasing capacity to 13 or 15 rounds Spacers are available that fit on these larger capacity magazines themselves they have the effect of extending the magazine well of the pistol thereby improving the ergonomic feel of the pistol when the longer magazines are inserted Glock 35 The Glock 35 is a 40 S amp W version of the competition Glock 34 The Glock Model 35 was the service pistol for the Kentucky State Police but by the summer of 2017 they had reverted from the Glock 35 back to 9mm weapons because of penetration improvements in the 9mm bullets noting some officers had never been able to make the switch from 9mm to 40 S amp W in the first place due to their struggles in mastering the higher caliber 121 As is typical of pistols chambered in 40 S amp W each of the standard Glock models 22 23 and 27 may be easily converted to the corresponding 357 SIG chambering Glock 31 32 and 33 respectively simply by replacing the barrel No other parts need to be replaced as the 40 S amp W magazines will feed the 357 SIG rounds 380 ACP Edit The Glock 42 chambered in 380 ACP is currently the smallest Glock handgun produced as of 2023 The Glock 42 was also the first Glock to be entirely manufactured domestically in the United States due to import export restrictions from Austria to the United States market The first two 380 ACP models are primarily intended for markets that prohibit civilian ownership of firearms chambered in military calibers such as 9 19mm Parabellum 122 Despite this they are legally prohibited from being sold to civilians in the United States due to being manufactured in Austria and not meeting the import restrictions based on their caliber 123 They are also prohibited from ownership in Canada due to not meeting minimum barrel length requirements for handguns Due to the relatively low bolt thrust of the 380 ACP cartridge the locked breech design of the Glock 19 and Glock 26 was minimally modified for the Glock 25 and Glock 28 to implement unlocked breech operation It operates via straight blowback of the slide This required modification of the locking surfaces on the barrel as well as a redesign of the former locking block Unusual for a blowback design the barrel is not fixed to the frame It moves rearward in recoil until it is tilted below the slide similar to the standard locked breech system The reduced size and mass of the Glock 42 required return to the Glock standard locked breech design Glock 25 The Glock 25 introduced in 1995 is a blowback derivative of the compact 102 mm 4 0 in barrel Glock 19 The magazine capacity is 15 rounds Standard fixed sight elevation is 6 9 mm unlike the 6 5 mm elevation used for the 9 19mm models 124 Glock 28 The Glock 28 introduced in 1997 is a blowback derivative of the subcompact 87 mm 3 4 in barrel Glock 26 The standard magazine capacity is 10 rounds but the 15 round Glock 25 magazine will function in the Glock 28 Standard fixed sight elevation is 6 9 mm unlike the 6 5 mm elevation used for the 9 19mm Parabellum models Glock 42 The Glock 42 introduced in 2014 is an all new locked breech slimline 83 mm 3 3 in barrel design The single stack magazine is unique to this model with a capacity of six rounds It is Glock s smallest model ever made and is manufactured in the US which unlike the Glock 25 and 28 allows it to be sold in that market 357 SIG Edit The subcompact Glock 33 in 357 SIG Glock 31 The Glock 31 is a 357 SIG variant of the full sized Glock 22 The standard magazine capacity of the Glock 31 is 15 rounds Glock 32 The Glock 32 is a 357 SIG variant of the compact Glock 23 The standard magazine capacity of the Glock 32 is 13 rounds Glock 33 The Glock 33 is a 357 SIG variant of the subcompact Glock 27 The standard magazine capacity of the Glock 33 is 9 rounds As is typical of pistols chambered in 357 SIG each of the standard Glock models 31 32 and 33 may be easily converted to the corresponding 40 S amp W chambering Glock 22 23 and 27 respectively simply by replacing the barrel No other parts need to be replaced as the 357 SIG magazines will feed the 40 S amp W round 45 GAP Edit Glock pistols chambered for the 45 GAP and the 45 ACP feature octagonal polygonal rifling rather than the hexagonal shaped bores used for models in most other chamberings 114 Octagonal rifling provides a better gas seal in relatively large diameter rifled bores since an octagon will have shorter sides and shallower angles than a hexagon 69 Glock 37 The Glock 37 is a 45 GAP version of the Glock 17 It uses a wider beveled slide larger barrel and different magazine but is otherwise similar to the Glock 17 The Glock 37 first appeared in 2003 It was designed to offer ballistic performance comparable with the 45 ACP in the frame size of the Glock 17 The concern with the size of the Glock 20 21 has been addressed by the Glock 36 21SF and 30SF all of which featured reduced size frames The standard magazine capacity of the Glock 37 is 10 rounds Glock 38 The Glock 38 is a 45 GAP version of the compact Glock 19 125 The standard magazine capacity of the Glock 38 is 8 rounds Glock 39 The Glock 39 is a 45 GAP version of the subcompact Glock 26 The standard magazine capacity of the Glock 39 is 6 rounds 22 LR Edit Glock 44 The Glock 44 is a 22 LR Long Rifle rimfire model based on the Glock 19 While the Glock 44 is similar in size as the Glock 19 the Glock 44 has a magazine capacity of 10 rounds and uses a simple blow back mechanism instead of a locked breech mechanism used on nearly all other Glock pistols 126 In addition the Glock 44 is lighter than the G19 weighing in at just 12 ounces and it retains Glock s popular polygonal rifling which has been tested by Glock to work with lead 22 bullets It uses a steel polymer composite slide due to the lower slide weight needed for blowback 127 Production in other countries Edit Iraqi police firing 9 mm Glock handguns at a firing range Aside from the original Austrian company Glock pistols are manufactured by the Glock Inc subsidiary division located in the United States Those batches are identical compared to the Austrian made ones but they are marked as USA instead of AUSTRIA on the slide Glock 17 pistols are being assembled locally at army workshops of Uruguay to fulfill the needs of the national military services and law enforcement organizations 128 The 205th Armory in Taiwan produces a copy of the Glock 19 named the T97 pistol The Taiwan made Glocks were made to replace the Smith amp Wesson Model 5906 used by the Taiwan police but it ultimately did not enter service Turkish company Akdal Arms produces a pistol named the Ghost TR01 which is heavily influenced by Glock pistols in its design 129 Russian firms such as Skat 130 131 ORSIS 132 and Izhmash 133 assemble three models of Glock pistols locally the Glock 17 34 and 35 Clones EditThird party frames and slides for Glock pistols began to appear in the early 2000s This has led to Glock becoming a generic term encompassing pistols not made by Glock Ges m b H especially as expiring patents allowed for complete Glock clones to be made 134 As of 2019 a large number of American companies produced Glock clones 135 There are three sidearms made by Iranian DIO s Shahid Kaveh Industry Complex which they call Ra ad has a safety selector possibly an unlicensed copy of Glock 17 Glock 19 and Kaveh 17 probably an improved Ra ad a variant of Glock 17S which all of them are unlicensed clones of Glock pistols 136 It is not known if they could make their way to Iranian military and replace the Browning Hi Power M1911 and SIG P226 pistols and they were possibly some prototypes and have never gone on mass production 137 The Tatmadaw of Myanmar have adopted a clone of the Glock 17 known as the MA5 MK II which was first reported in 2018 138 They are currently being manufactured and adopted for Myanmar s special forces units 139 In 2017 it was reported that Norinco was able to make a clone of the Glock 17 140 known as the NP 7 or NP7 141 The pistol was subcontracted to Hunan Ordnance Industry Group through the Hunan Ordnance and Light Weapons Research Institute 142 143 Its features appear to be influenced by the fourth gen Glock 17 144 The NP7 is being marketed for export sales 144 Unlicensed Glock clones are made in Pakistan s Khyber region 145 which were first reported in 2018 146 147 Users EditCountry Organization Model Argentina Agrupacion de Fuerzas de Operaciones Especiales 148 17 19X Armenia National Police of Armenia 149 17 18 Australia Royal Australian Air Force 150 19 26Australian Federal Police 151 New South Wales Police Force 152 Queensland Police Service 153 Western Australia Police Force 154 Northern Territory Police Force 155 Tasmania Police 156 17 19 22 23 26 27 Austria Austrian Armed Forces incl Militarstreife 157 158 159 17 Pistole 80 18C 26 21Bundespolizei 160 EKO Cobra also G18 Min of Interior Justizwache Min of Justice 161 17 18 19 Azerbaijan For use with Special Military Services 160 Glock pistols purchased in 2013 162 19 Bangladesh Ordered by Bangladesh Army 163 26Used by SWAT of Bangladesh Police 164 17 Brazil Policia Federal Federal Police 165 17 19 26Policia Rodoviaria Federal Federal Highway Police 166 17 17 MOS 26Policia Militar do Estado de Sao Paulo Military Police of Sao Paulo State 167 22Policia Civil do Estado de Sao Paulo Civil Police of Sao Paulo State 168 22Policia Militar do Estado do Rio de Janeiro Military Police of Rio de Janeiro State 169 23Policia Militar do Estado do Espirito Santo Military Police of Espirito Santo State 170 17 22Policia Militar do Estado da Bahia Military Police of Bahia State 171 221º Batalhao de Forcas Especiais 172 17 21 Canada Ontario Provincial Police OPP 86 Quebec Provincial Police Surete du Quebec SQ 157 17 17M 19 26 China Special Police Units 173 17 Czech Republic 601st Special Forces Group 174 nonstandard sidearm issued on international deployments 175 17 Denmark Sirius Dog Sled Patrol Greenland 176 20 Ecuador National Police 157 Various special police units such as the GOE and GIR 157 17 Estonia Police and Border Guard Board 177 178 19Estonian Special Operations Force 179 19 Finland Finnish Defence Forces 180 17 as 9 00 PIST 2008 Finnish Police primary service firearm 181 Border Guard Ministry of Interior 180 17Criminal Sanctions Agency Dept of Corrections Vankeinhoitolaitos Ministry of Justice 180 France French Armed Forces G17 standard 182 183 27 184 185 COM FST Cdos Marine units 158 186 17 17 MOS 19 26 34 Georgia Mainly used by GSOF and some MIA units 157 158 Became standard issue for Georgian Ministry of Internal Affairs forces in October 2021 187 17 21 26 Germany Kampfschwimmer of the Bundeswehr G17 issued under designation P9 188 108 17Federal and State Police tactical units GSG 9 SEKs Customs ZUZ G17 G19 G26 108 17 19 26State Police in Saxony Anhalt about 8 600 G46 TR standard issue firearm 108 106 46 Greece Eidikh Katastaltikh Antitromokratikh Monada EKAM unit of the Hellenic Police 189 21 Hong Kong Hong Kong Police Force incl special units SDU CTRU ASU SBDIV 157 ICAC C amp E Dept 17 19 Iceland Iceland Crisis Response Unit Ministry of Foreign Affairs 190 191 192 Icelandic National Police 190 191 192 Vikingasveitin units 190 191 192 Ministry of Interiour India Standard Issue side arm for special forces Para SF Army MARCOS Navy National Security Guard Min of Home Aff 157 17 26 Iraq Iraqi security forces military and law enforcement forces purchased 125 163 pistols 193 19 Israel Israeli Defense Forces 158 Israel Police 17 19 Jordan Royal Guard 157 Kosovo Kosovo Police Kosovo Security Force 194 195 17 Latvia Latvian Military 158 standard issue pistols with Land Forces 196 197 198 17 19 21 26 Lithuania Lithuanian Armed Forces 158 199 17Lithuanian Police 200 17 19 26 Luxembourg Luxembourg Army 201 17Unite Speciale de la Police of the Grand Ducal Police 202 203 17 26 Malaysia Malaysian Armed Forces 204 17 19 34Malaysia Coast Guard MMEA 205 Royal Malaysia Police 204 Ministry of Home Affairs 17 18 19 26 34Royal Malaysian Customs Ministry of Finance 206 17 19 26 43 Mexico Armada de Mexico Navy 157 17 Monaco Compagnie des Carabiniers du Prince 207 208 17 Montenegro Armed Forces of Montenegro standard military sidearm 209 17 Myanmar Used by Myanmar Army 178 and the Myanmar Police Special Task Force 210 Manufactured locally as MA 1 MK II 211 MA5 MK II Netherlands Military of the Netherlands 158 212 213 Royal Marechaussee Min of Defence BSB sections Persoonsbeveiliging PB Observatie Team OT and Sky Marshals also use Glock 26 214 17 18 26Dutch Police standard issue firearm of the Dienst Speciale Interventies 215 216 217 17 New Zealand New Zealand Defence Force 218 17New Zealand Police 219 an unarmed service but are trained to use firearms 17 Norway Norwegian Armed Forces 157 158 17 P 80 P 80NM1 P 80NM2 Pakistan In use with Special Service Group units 220 17 19 Philippines Armed Forces of the Philippines 221 Philippine Army 221 Philippine Marine Corps MARSOG 222 Presidential Security Group joint service unit 157 17 21National Intelligence Coordinating Agency Philippine Drug Enforcement Agency 157 Office of President 157 National Bureau of Investigation Dept of Justice 157 Philippine National Police DILG 157 17 Peru Peruvian Air Force Peruvian Army Peruvian Navy Direccion Nacional Antidrogas 17 Poland Polish Armed Forces 158 17Border Guard 223 Polish Police 224 Ministry of Interior and Admin 17 19 26 Portugal Portuguese Army 225 Portuguese Marine Corps 158 226 Maritime Police 227 Military Judiciary Police 228 Ministry of National Defence 17Guarda Nacional Republicana 226 Policia de Seguranca Publica 229 Foreigners and Borders Service 230 Municipal Police 231 Ministry of Internal Administration 19 19XJudiciary Police 232 Prison Guard 233 Ministry of Justice 19 26 Romania Romanian Armed Forces 158 17 17L Russia Special Operations Forces 234 17 26Federal Security Service FSB 235 Ministry of Internal Affairs MVD special forces 236 237 17 19 Serbia Police of Serbia 238 239 17 19 21 35 Singapore Singapore Police Force 240 Prison Service Ministry of Home Affairs 241 19 Slovakia 5th Special Operations Regiment Slovakia 242 17Slovak Police Force 243 Spain Unidad Especial de Intervencion UEI group of Spanish Civil Guard 244 Special Naval Warfare Force 245 Army s Special Operations Command 246 17 19 43 Sweden Swedish Armed Forces 158 247 248 17 Pistol 88 88C 88C2 19 Pistol 88B 88D Switzerland Swiss Armed Forces Military Police Swiss Grenadiers ARD 10 FSK 17 249 17 26Police Gendarmerie Cantonal of Geneva 250 19 Taiwan Various criminal investigation bureaus outside major cities 251 19 Thailand Royal Thai Police at least 2 238 G19 157 G17 used by Arintharat 26 Naresuan 261 units 252 17 19 Timor Leste National Police of East Timor 253 19 Tunisia Unite Speciale Garde Nationale 254 17 34 Turkey Used by Special Forces Command 255 17 19 United Kingdom British Armed Forces 256 17 L131A1 257 258 17T L132A1 19 L137A1 258 Specialist Firearms Command of the Metropolitan Police Service 259 17 17M 19 19M 26 260 Police Service of Northern Ireland 261 Police Scotland Specialist Firearms Units 262 17 United States USSOCOM 91 97 98 99 United States Marine Forces Special Operations Command 263 United States Navy SEALs 264 19 19M 26U S Customs and Border Protection 265 266 United States Coast Guard 267 Dept of Homeland Security 19 26 47 19Federal Bureau of Investigation 268 Bureau of Alcohol Tobacco Firearms and Explosives 269 Drug Enforcement Administration 270 Dept of Justice 17M 19 19M 22 23 27New York City Police Department 271 New York State Police 272 New York State University Police 273 17 19 21 22 23 27New Jersey State Police 274 Port Authority Police Department 275 19Kentucky State Police SRT 276 27 35Kansas Highway Patrol 277 17Alaska State Troopers 278 22Douglas County Sheriff s Department Douglas County Oregon 279 18Dallas Police Department 280 17 19Houston Police Department 280 17 Uruguay Uruguayan National Army 281 17 Vatican City Swiss Guard 282 19Gendarmerie of Vatican City 282 17 Venezuela Venezuelan Armed Forces 157 158 17 Yemen Military of Yemen 283 19Criminal use in the US EditGlock pistols have been used in mass shootings including the 1991 Luby s shooting the 2007 Virginia Tech shooting the 2011 Tucson shooting the 2012 Aurora shooting the 2012 Sandy Hook Elementary School shooting the 2015 Charleston church shooting the 2016 Orlando nightclub shooting Pittsburgh synagogue shooting and the 2022 NYC subway shooting Experts on gun control mass shootings and defense training have cited factors such as reliability ease of use and commonness The criminal use of handguns including Glocks has led to calls for increased gun control in the United States 284 285 286 This common usage however has been described by Paul M Barrett to be a result of Glock s overall popularity and market presence in the US and that this level of violence isn t necessarily tied to a particular to a brand In the late 80s gun control advocates had similarly focused on Glock pistols because of their magazine capacity compared to six shot revolvers but also their futuristic distinct appearance They were singled out for restriction by some jurisdictions and were branded the hijacker s special based on the false assumption that they could bypass airport metal detectors because of their polymer frame This was refuted in Congressional hearings by the ATF FAA and other organizations responsible for airline security which proved embarrassing for the bans advocates and provided significant publicity for Glock 287 better source needed In April 2022 Ilene Steur a survivor of the 2022 NYC subway attack sued Glock and its Austrian parent company for compensation for her physical injuries and emotional pain 288 See also EditGlock entrenching tool Glock knifeReferences Edit Molinari Piergiorgio 14 September 2021 New GLOCK Watch Chrono it s time to celebrate the 40th anniversary of the GLOCK pistol All4shooters Dockery Kevin 2007 Future Weapons New York Penguin p 188 ISBN 978 0 425 21750 4 Archived from the original on 22 January 2016 Retrieved 1 January 2016 Glock 18 Tuffsteel Manufacturing 2004 Archived from the original on 27 November 2010 Retrieved 27 November 2010 verification needed Glock 17 EnemyForces net Archived from the original on 16 December 2010 Retrieved 26 December 2010 verification needed ETS 40 round 9mm mag fits Glock 17 18 19 26 34 Elite Tactical Systems Group BETA MAG Magazine 9MM Glock Clear The Beta Company a b c d Kasler 1992 p 2 Sweeney Patrick 2008 The Gun Digest Book of the Glock 2nd ed Iola WI Krause Publications ISBN 978 0 89689 642 0 page needed Barrett Paul 2012 Glock The Rise of America s Gun 1st paperback ed New York ISBN 978 0 307 71995 9 OCLC 793579035 Luke C 19 February 2021 The Top 10 Selling Handguns on Gunbroker com for 2020 The Firearm Blog Retrieved 20 February 2021 Horan Daniel 17 January 2012 Pistol Packing By the Millions The Wall Street Journal Archived from the original on 9 July 2017 Retrieved 3 August 2017 a b Metal Treatments Ferritic Nitrocarburizing Melonite Tenifer Firearms History Technology amp Development 7 August 2010 Archived from the original on 6 October 2014 Retrieved 25 December 2014 Defence Standard 05 101 Part 1 Proof of Ordnance Munitions Armour and Explosives PDF Ministry of Defence 20 May 2005 p 13 Archived from the original PDF on 6 April 2008 a b Kasler 1992 p 4 Motz Josef amp Schuy Joschi 2013 Die Weiterentwicklung der Selbstladepistole I The further development of the self loading pistol I in German Laxenburg Motz amp Schuy p 531 ISBN 978 3 9502342 2 0 Sweeney Patrick 2003 The Gun Digest Book of the Glock Iola Wisconsin Krause Publications ISBN 978 0 873495585 Kokalis Peter G October 1984 Plastic Perfection SOF Expert Gives Glock 17 Great Grades Soldier of Fortune Archived from the original on 6 February 2015 Retrieved 5 February 2015 Kinard Jeff 2003 Pistol Santa Barbara CA ABC CLIO ISBN 978 1 85109 475 2 a b c Wozniak 2001 p 45 Kasler 1992 p 6 a b c d Kasler 1992 p 7 Vapen Pistol 88 Forsvarsmakten in Swedish Janson O 5 August 2012 Swedish Military Pistols and Revolvers 1863 1988 Gota Association for Weapon History British armed forces get first new pistol since World War II The Register 11 January 2013 Archived from the original on 17 January 2013 Retrieved 19 January 2013 Letter FOI 2018 15464 PDF Ministry of Defence 10 November 2018 Letter FOI 2018 15730 PDF Ministry of Defence 12 December 2018 a b Kotlarski Amael 7 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October 2009 Retrieved 29 October 2009 淘汰20年骨董槍 警用手槍5年內全面換新 Eliminate 20 year old guns and replace police pistols with new ones within 5 years Storm Media Group in Chinese 9 November 2015 Archived from the original on 14 November 2015 xawuthpracakay aelaxawuththpracakaythharrab Personal weapons of the Infantry Thai Army in Thai Archived from the original on 24 March 2019 Muggah Robert amp LeBrun Emile eds October 2010 Timor Leste Armed Violence Assessment Final Report PDF Special Report No 12 Small Arms Survey p 17 ISBN 978 2 940415 43 4 Archived from the original PDF on 5 May 2017 Retrieved 30 August 2018 International Glocks Fighting Terror in Tunisia Tactical Life 18 March 2016 Bordo Bereliler The difficult we do immediately the impossible takes a little longer Special Ops 6 October 2012 Retrieved 10 June 2021 Glock 17 9mm pistols replace Browning for UK forces BBC News 11 January 2013 Archived from the original on 11 January 2013 Retrieved 11 January 2013 Royal Air Force Aircraft 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Washington DC U S Customs and Border Protection 9 April 2019 Retrieved 1 June 2019 D Costa Ian 12 April 2019 Shhh Glock just released a new Glock without really saying anything G47 MilitaryTimes com Sightline Media Group Retrieved 1 June 2019 Officially designated the Glock 47 or G47 the gun is a functional blend of a few of Glock s other products which the company hopes will give CBP agents a distinct advantage when in the field Coast Guard fields new Glock pistols UPI 30 September 2020 Ayoob Massad 1 July 2008 The Glock 22 America s best selling police pistol Guns Magazine 14 17 ATF Gives Agents Choice of 40 Caliber Glocks Police 8 September 2010 Archived from the original on 28 January 2015 Retrieved 24 January 2015 Ayoob Massad December 2004 9mm Dead American Handgunner Archived from the original on 1 July 2009 Retrieved 24 July 2009 NYPD Set to Retire Last of its Revolvers The Firearm Blog 30 November 2017 Archived from the original on 19 July 2018 Retrieved 6 January 2019 The internal memo states that by 31 August 2018 all of the department s officers must be equipped with one of three duty pistols the Glock 17 gen 4 Glock 19 gen 4 or the SIG Sauer P226 all with the infamous 12lb triggers The transition is slated to begin in January next year with three day transitional courses on semi automatics scheduled for officers more familiar with revolvers Annual Report 2018 PDF New York State Police p 6 In 2018 the Academy Firearms Training Unit was responsible for the seamless transition to a new weapons system for the Division of State Police Sworn members were trained on a new Glock 45 caliber duty sidearm ammunition holster and TLR weapons light system General Order 1 Law Enforcement Role and Authority PDF New York State University Police at Albany Archived PDF from the original on 26 March 2019 Retrieved 26 March 2019 The Department Issued Duty Weapon is a Glock 40 S amp W Uniformed patrol staff are issued model 22 pistols Plain Clothes staff are issued model 23 or 27 pistols depending on personal preference and subject to qualification and Lead Firearms Instructor approval Modification to the model or weapon issued to an individual member outside of this criteria is subject to the approval of the Chief of Police or their designee and the Lead Firearms Instructor Alexander Dan 19 May 2017 State Police sue gun maker over faulty pistols New Jersey 101 5 Archived from the original on 7 January 2019 Retrieved 6 January 2019 NJSP instead selected the Generation 4 Glock 19 as its new weapon and also had to order new holsters Reliable Nine Examining the Popularity of the Glock 19 Personal Defense World 24 February 2017 Archived from the original on 7 January 2019 Retrieved 7 January 2019 The Port Authority Police chose the Glock 19 as standard issue and the Housing Authority and Transit Authority police were issued Glock 19s when they were absorbed into the NYPD several years ago Kentucky State Police SRT GLOCKs Personal Defense World 3 July 2014 Archived from the original on 12 February 2015 Retrieved 12 February 2015 2018 Annual Report Kansas Highway Patrol Alaska Troopers Get Gen4 Glock Pistols Police 9 May 2013 Archived from the original on 17 February 2018 Retrieved 17 February 2018 Comus Steve 1993 The Gun Digest Book of 9mm Handguns DBI Books Inc pp 134 137 ISBN 0873491491 a b Taylor Brooke 25 October 2022 HPD officers have to spend 2K to buy own guns bullets handcuffs ABC 13 Samfelt Patricia 28 April 2013 Uruguay to produce Glock pistols IHS Jane s Defence Weekly Archived from the original on 9 November 2013 a b Rogoway Tyler 28 September 2015 The Pope Has A Small But Deadly Army Of Elite Warriors Protecting Him Jalopnik Archived from the original on 26 February 2019 Retrieved 26 February 2019 span, wikipedia, wiki, book, books, library,

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