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M240 machine gun

The M240 machine gun, officially the Machine Gun, 7.62 mm, M240, is the U.S. military designation for the FN MAG,[6] a family of belt-fed, gas-operated medium machine guns that chamber the 7.62×51mm NATO cartridge.[1]

Machine Gun, 7.62 mm, M240
M240B equipped with a bipod
TypeGeneral-purpose machine gun
Place of origin
  • Belgium (designed)[1]
  • United States (manufactured)[1]
Service history
In service1977–present[2]
Used bySee Users
Wars
Production history
DesignerErnest Vervier
Designed1950s
Manufacturer
Unit costUS$6,600
Produced1977–present[2]
VariantsSee Variants
Specifications
Mass27.6 lb (12.5 kg) (M240B)
Length49.7 in (1,260 mm)
Barrel length24.8 in (630 mm)
Width4.7 in (120 mm)
Height10.4 in (260 mm)

Cartridge7.62×51mm NATO[4]
ActionGas-operated long-stroke piston, open bolt
Rate of fire
  • Cyclic:
    • 650–750 rounds/min: Gas setting 1
    • 750–850 rounds/min: Gas setting 2
    • 850–950 rounds/min: Gas setting 3[5]
Muzzle velocity2,800 ft/s (853 m/s)[1]
Effective firing range800–1,800 m (875–1,969 yd) depending on mount
Maximum firing range3,725 m (4,074 yd)[1]
Feed systemBelt-fed using M13 disintegrating links, 50-round ammo pouch, or non-disintegrating DM1 belt
SightsIron sights: front blade and folding rear leaf with aperture and notch

The M240 has been used by the United States Armed Forces since the late 1970s. It is used extensively by infantry, most often in rifle companies, as well as on ground vehicles, watercraft and aircraft. Though it is heavier than some comparable weapons, it is highly regarded for reliability and its standardization among NATO members is a major advantage.

All variants are fed from disintegrating belts and are capable of firing most types of 7.62 NATO ammunition. M240 variants can be converted to use non-disintegrating belts. There are significant differences in weight and some features among some versions which restrict the interchangeability of parts. The M240s used by the U.S. military are currently manufactured by FN America, the American subsidiary of the Belgian company FN Herstal.[7]

The M240B and M240G are usually fired from integrated bipods, tripods, or vehicular mounts; regarding tripod use, the U.S. Army primarily uses the M192 lightweight ground mount, while the U.S. Marine Corps uses the M122A1 tripod, a slightly updated M2 tripod.

History edit

Development edit

Manufactured by the American division of the Belgian company Fabrique Nationale d'Herstal,[8] the FN MAG was chosen by the U.S. military for different roles after large worldwide searches and competitions. The MAG is a belt-fed, gas-operated, air-cooled, crew-served, general-purpose machine gun.[8] Its versatility is demonstrated by its ability to be fired effectively from its integral bipod, mounted on a tripod, on ground vehicles, watercraft and aircraft.[citation needed]

It was first adopted by the U.S. Army in 1977, as a coaxial tank gun,[9] and slowly adopted for more applications in the 1980s and 1990s. The M240 and M240E1 were adopted for use on vehicles.[10] This led to further adoption in more uses, especially for the Army and Marine Corps infantry.

While possessing many of the same basic characteristics as its predecessor, the durability of the MAG system results in superior reliability when compared to the M60. The MAG actually has a more complex gas system than the M60, but gives better reliability combined with lower maintenance requirements, though this comes at greater manufacturing cost and weight.[11]

Compared to other machine guns, its rating of 26,000 mean rounds between failure (MRBF) is quite high for its weight – in the 1970s when it was first adopted it achieved about 7,000 MRBF. It is not as reliable as some very heavy older designs, but it is quite reliable for its mass.[citation needed]

Testing and adoption edit

The U.S. adoption of the MAG has its origins in the late 1960s and early 1970s as a project to procure a new coaxially mounted 7.62 mm machine gun for tanks to replace the M73 and M219 machine guns then being used.[9] The 1950s-era M73 had been rather troubled, and the derivative M73E1/M219 was not much of an improvement.[9] A number of designs of the period from various countries were considered; the final two candidates were the M60E2 and the FN MAG, which underwent comprehensive testing alongside the older M219 for comparison.[9]

Two main criteria analyzed were "mean rounds between stoppages" (MRBS, malfunctions that can be cleared within minutes) and "mean rounds between failures" (MRBF, such as a part breaking). The results for the evaluated machine guns were the following:

Type Rounds fired MRBS MRBF
FN MAG 58 50,000 2,962 6,442
M60E2 50,000 846 1,669
M219 19,000 215 1,090
Minimum specified 850 2,675
Minimum desired 1,750 5,500
 
M240 coaxial machine gun aboard an M1 Abrams tank

The MAG itself underwent some improvements and the M60E2 was a specialized coaxial variant that differed from some of the other types. The qualities of the M60 variants vary considerably, such as between the M60E4 and the M60C. The clear winner was the MAG, which was designated as the M240 in 1977 after the army competition.[citation needed]

The M240 was adopted as the U.S. Army's standard vehicle machine gun in 1977. The Marine Corps also adopted the M240 and M240E1 for use on vehicles like the LAV-25. It then went on to replace many older types of vehicle machine guns in the 1980s. U.S. Navy SEALs continued to use the "CAR-60" (M60E3) version of the M60 machine gun due to its lighter weight and slower rate of fire, which allows a more effective duration of fire with allowable levels of ammunition carried.[citation needed]

The M240 proved popular enough that it was adapted by the infantry later on, as the M240G and M240B. The USMC adopted the M240G for this role in 1991, where it not only replaced the original M60s used by the Marine Corps infantry, but also the upgraded M60E3 that the Marines had started using in the 1980s. In the late 1990s, the Army adopted the M240B for the infantry role – they had considered the M60E4, which (though lighter and cheaper) did not offer commonality with the vehicle-borne M240, other FN MAG users within NATO, or the USMC.

The various versions of the M240 have not entirely replaced all the M60 versions, though they have for most main applications and roles. The M60 is still, in some cases, used by the Navy.

2022 military solicitation edit

As of March 2022, the United States Army had a solicitation ongoing for a M240 machine gun 6.8×51mm conversion kit to modify the 7.62×51mm NATO-chambered M240B and M240L general-purpose machine guns to fire the 6.8×51mm ammunition.[12][13]

Design details edit

 
A US Marine inserts an ammunition belt into the feed tray of the M240G

The weapon fires from the open bolt position, meaning that the bolt is held to the rear and only moves forward as it is firing a round. The firing pin is static and the bolt moves around the firing pin, circumventing any need for a hammer. A sear is used to time the internal mechanisms of the weapon to provide a consistent rate of fire, ensuring proper function and accuracy.

The rate of fire may be controlled by three different gas regulator settings. The first setting allows the weapon to cycle at 650–750 rounds per minute, the second setting being 750–850 rounds per minute, and the third setting being 850–950 rounds per minute.[5] These settings are changed by dismounting the barrel, removing the gas regulator collar and turning the gas regulator to allow more or less gas to move through the weapon system. It is generally performed only when necessary to return the gun to operation after fouling has caused sluggish operation and there is no time to properly clean the weapon.[citation needed]

The barrels can be exchanged rapidly, via a barrel release button located on the left side of the weapon. The weapon is cleared first and then the button is held down, while the barrel's carrying handle is moved from the right side of the weapon to the center, unlocking it from the receiver. At this point, the button is released and the barrel is then pulled free of the receiver and placed to the side. The new barrel is inserted into the receiver and then the carrying handle is shifted to the right, locking it into place.

During prolonged firing, the barrels can become hot enough to inflict second-degree burns instantly without becoming visibly different.

Variants edit

 
A Marine performs maintenance on a mounted M240 pintle-mounted machine gun on a LAV
 
An M1 Abrams tank with the tank commander's .50-caliber M2 Browning machine gun on the right side of the tank, and the ammunition loader's M240 on the left side of the tank. A second M240 is mounted coaxially next to the main gun
 
M240E1 variant on a LAV-25

FN Herstal first introduced the MAG general-purpose machinegun in the early 1950s. The M240 is the US military's adoption of the FN MAG. Parts compatibly of other MAG variants adopted by other NATO members are interchangeable.[2] This has significant advantages in training, logistics support, tactical versatility, and joint operations.[2]

M240 edit

The M240 is adapted as a coaxial machine gun for tanks and 7.62 mm fire power on light armored vehicles.[14] The M240 is part of the secondary armament on the U.S. Army M1 series Abrams tank, M2/M3 series Bradley Fighting Vehicle, and the U.S. Marine Corps LAV-25.[15]

The M240E1 is the U.S. Marine Corps version of the original M240 coaxial/pintle-mounted machine gun that is used on vehicles like the LAV-25. It can also be fitted with spade grips for flexible use, like the ones from the M240D.

The M240C is the right-hand variant on the original coaxial (installed alongside the main weapon) M240, it is identical to the M240 except for the ammunition cover and feed tray. It has a right-handed feed for use on the M2/M3 Bradley Fighting Vehicle and LAV as the coaxial machine gun. It is fed from the left on the M1 Abrams and other M1 variant (M1A1, M1A2, M1A2 SEP) tanks. The M240C uses a charging cable instead of a charging handle, has a cut-off pistol grip and has a special paddle assembly that allows the trigger to be actuated by means of a solenoid. Since the machine gun is not meant to be handled during use, the barrel is fully exposed and must be handled with asbestos mittens during barrel changes.

The rate of fire of the M240, M240E1, and M240C can be controlled by three different gas regulator settings;

  • The first setting allows the weapon to have a cyclic rate of fire of around 650–750 rounds per minute,
  • The second setting allows the weapon to have a cyclic rate of fire of around 750–850 rounds per minute,
  • The third setting allows the weapon to have a cyclic rate of fire of around 850–950 rounds per minute.

M240D edit

The M240D is an upgrade of the M240E1, primarily in the addition of an optical rail on the receiver cover. It has two possible configurations: aircraft and egress (ground). In the aircraft configuration, the M240D has a front and rear sight and a trigger group which accommodates the spade grip device, while the ground configuration involves the installation of an egress package or "infantry modification kit", which is designed to provide downed aircrew personnel with increased firepower. The egress package contains a buttstock assembly, a buffer assembly, a bipod assembly, and a conventional trigger assembly.

The barrel assembly contains a three position gas regulator. The first setting allows the weapon to cycle at 650–750 rounds per minute, the second gas setting allows the weapon to cycle at 750–850 rounds per minute, and the third setting allows the weapon to cycle at 850–950 rounds per minute.

The aircraft configured M240D weighs 25.6 lb (11.6 kg) and is 42.3 in (1,074.42 mm) long, whilst the egress configuration weighs 26.2 lb (11.9 kg) and is 49 in (1244.6 mm) long.

M240H edit

The M240H (formerly designated as the M240E5)[14] is an improvement of the M240D, the M240H features a rail-equipped feed cover, an improved flash suppressor, and has been configured so that it can be more quickly converted to infantry standard using an Egress Kit. The M240H has an overall length of 41.6 in (1056.6 mm) with a 21.7 in (551.2 mm) barrel and weighs 26.3 lb (11.9 kg) empty, and has a cyclic rate of fire of around 550–650 rounds per minute. The M240H entered service in 2004 on U.S. Army helicopters. It is equipped with dual spade grips and thumb-activated trigger systems, and can be quickly converted for dismounted infantry use via an egress components kit that includes a bipod and conventional pistol grip trigger module.[16]

M240G edit

 
Marines with a tripod-mounted M240G

The M240G allows for commonality throughout the Marine Corps whether the weapon is used in an infantry, vehicular, or airborne role. The M240G is the ground version of the original M240 or M240E1, 7.62 mm medium class weapon designed as a coaxial/pintle-mounted machine gun for tanks and LAVs. The M240G can be modified for ground use by the installation of an "infantry modification kit" (a flash suppressor, front sight, carrying handle for the barrel, a buttstock, infantry length pistol grip, bipod, and rear sight assembly). The M240G lacks a front heat guard, and as such is a few pounds lighter than the M240B, weighing in at 25.6 lb (11.6 kg). The rate of fire of the M240G can be controlled by three gas settings. On gas setting one the weapon will fire at 650–750 rounds per minute, on gas setting two the weapon will fire at 750–850 rounds per minute, and on gas setting three the weapon will fire at 850–950 rounds per minute. The size of the gas port increases resulting in greater energy being delivered to the action. Use at high settings induces added stresses on the action and results in a shorter service life of the weapon. It gives the operator an ability to adjust the gas bleed to the action. This also allows the weapon to continue firing when very dirty from sustained use in combat conditions when it may be otherwise rendered inoperable due to an extremely dirty and dry action.

M240N edit

The M240N is designed with a front and rear sights, and configured specifically for mounting on watercraft. It is similar to the M240G, but lacks the integral bipod. It also uses the hydraulic buffer of the M240B, and features the lower cyclic rate of fire of the M240B which is around 550–650 rounds per minute.[14]

M240B edit

 
An M240B in use by a U.S. Army soldier

The M240B (formerly called as the M240E4) is the standard infantry medium machine gun of the U.S. Marine Corps. The U.S. Navy and Coast Guard likewise utilize the weapon system, and is also still used by some units in the U.S. Army. It comes configured for ground combat with a buttstock and bipod, though it can also be mounted on tripod, ground vehicles, aircraft, aboard ships, and small boats. It is almost always referred to as the "M240 Bravo" or just "240" verbally.[17]

The M60E4 (Mk 43 as designated by the Navy) was pitted against the M240E4 (former designation of the M240B) in the Army trials during the 1990s for a new infantry medium machine gun, in a competition to replace the decades-old M60s. The M240E4 won, and was then classified as the M240B. This led to 1,000 existing M240s being sent to FN for an overhaul and a special kit that modified them for use on ground (such as a stock, rail systems, etc.). This led to procurement contracts in the late 1990s for the all-new M240B. However, a new feature was added, a hydraulic buffer system to reduce the felt recoil as incorporated in the M60.[citation needed] While the M240B had been more reliable in the tests, it was a few pounds heavier than the M60E4, which led to the development of the lighter M240L. The Army M240 converted to the M240B configuration should not be confused with the large numbers of M240/E1 converted to the M240G configuration for the Marine Corps.

 
A Seabee fires an M240B mounted atop a Humvee

The main differences between the M240B and M240G is the Picatinny rail system, hydraulic buffer inside of the butt stock to reduce the amount of recoil felt by the gunner, and the number of gas settings on the gas regulator plug. The M240G has three gas settings, allowing the machine gun to have a fire rate between 650–750 rounds per minute when set to the first gas setting, 750–850 rounds per minute at the second gas setting, and 850–950 rounds per minute at the third gas setting, whereas the M240B only has one setting, restricting the fire rate to between 550–650 rounds per minute. The smaller gas port used on the M240B slows down the rate of fire, which increases the longevity of the machine gun by reducing stresses on the action. A side effect is a weapon that will not fire when extremely dirty as the energy on the piston is reduced.

The M240B is being tested with a new adjustable buttstock that may replace the current stock of the M240B.[18] The lighter M240L has started to replace the M240B in U.S. Army service.[19] The Marine Corps is observing the progress of the M240L, but feels it is too expensive for adoption. The Corps is instead looking to upgrade the M240 barrel through several ways, including carbon fiber coatings, new alloys, or ceramic liners, to lighten and strengthen the barrel. The goal would be a barrel that would not need to be changed, would weigh the same, but decrease heat retention, lessen warping, and eliminate cook-offs. They are also interested in incorporating a suppressor into the barrel, rather than having to attach one, to reduce the sound of shots and make it difficult to determine where the gunner is located.[20]

M240L edit

 
Weight reduced short-barreled M240L, the newest variant in service

The M240L (M240 Lima), formerly the M240E6 is the product of the M240B weight reduction program which reduces the weight of the existing M240B by 5.5 lb (2.5 kg).[21] To achieve 18% weight savings, the M240L incorporates titanium construction and alternative manufacturing methods for fabricating major components. The resulting improvements reduced the soldier's combat load while allowing easier handling and movement of the weapon. The M240L may replace the M240B in U.S. Army service.[19] It was type classified in the fourth quarter of fiscal year 2010.[22][23]

Titanium was used to make the receiver body, front sight post, and carrying handle while maintaining steel operating system components. Manufacture had to be adjusted because titanium takes longer to machine than steel and requires more frequent replacement of tooling bits; more pliable stainless steel rivets were used, and the receiver was coated with boron and chrome carbo-nitride coatings with a ceramic-based top coat to preserve it under extreme operating temperatures. The M240L weighs 22.3 lb (10.1 kg) with a standard-length barrel and standard stock, and weighs 21.8 lb (9.9 kg) with a shorter barrel and collapsible stock. The short barrel is 4 in (102 mm) shorter than a standard M240 barrel, and with the collapsible stock the M240L can be made 7 in (178 mm) shorter. The smaller and lighter variant of the M240L is the M240P. The M240P is not used as often as its predecessors.[24][25] The Army initially bought 4,500 M240Ls, and plans to buy 12,000 total.[20]

Barrett 240 edit

The Barrett 240 Light Weight Program has its design roots in the original U.S. Army solicitation for a lighter M240 medium machine gun in 2010. The program called for a much lighter version of the M240, while keeping the same open bolt design. This was formally known as the M240B Weight Reduction Program, or the M240E6. The results of that solicitation ended with the adoption of the M240L by the U.S. Army. By producing the receiver out of titanium, instead of steel, FN delivered a light-weight solution by trimming the weight of the M240B by 5.5 pounds, or an 18 percent weight reduction of the original machine gun, giving it an overall weight of 22.3 pounds. The Lima is in limited service with the U.S. Army.[26]

Although Barrett did not participate in the solicitation program, the company felt that it could produce an equivalent weight reduction by more efficient manufacturing methods instead of simply switching to the much more expensive titanium receiver. In addition, the company makes the point that the majority of worldwide titanium reserves are coming from Russia and China. Should relations between the United States and these countries sour, it would become much harder to find sources of titanium. Thus Barrett designed the 240LW and 240LWS, keeping the standard M240 technical data package, while more efficiently manufacturing the receiver.[26]

In 2020, Geissele Automatics announced the acquisition of the technical data packages and intellectual property for the 240LW and 240LWS.[27]

240LW edit

The Barrett 240LW (Light Weight) is a general-purpose machine gun capable of mounting on a bipod, tripod, aircraft, or vehicle. It is belt fed, air-cooled, gas operated, fully automatic and fires from an open bolt. It features an adjustable buttstock with a hydraulic buffer, feed pawls, a fluted quick detach barrel, a new handguard with Keymod attachments, a new quick detach titanium bipod, adjustable carrying handle, a rivetless receiver, and a three position gas regulator.[28]

240LWS edit

The Barrett 240LWS (Light Weight Short) gas operated, belt fed, open bolt, medium machine gun is a shortened variant of the 240LW. The design concept of this variant is to produce a viable medium machine gun that would serve in a special operations capacity, where a small team of operators could maximize a medium machine gun by having it in a shorter and lighter package than its big brother, the 240LW, or the equivalent M240B. This follows in the footsteps of the Mk 48 and the M60E6 medium machine guns, also designed for the small unit role. The Mk 48 is a variant of the M249 light machine gun, scaled up to chamber 7.62×51mm NATO; it has come across some issues in its service life; it was never designed to be a general-purpose machine gun, while the M60E6 arguably came too late to make a difference in USMC and US Army general machine gun adoption, being that the M240 design was already well standardized within the Department of Defense ranks. Both offerings are more focused on Special Operations in US Service.[26]

The Barrett 240LWS features a removable and telescoping buttstock that has six adjustable positions. It differs from the buttstock of the 240LW by being half of its size in length, and doesn't have a polymer cheek piece. There are two telescoping rods that allow the buttstock to be extended to the desired position when depressed from the top portion. The rods have indentations on them, which lock into positional latches within the rear of the buttstock. The hydraulic buffer is permanently encased within the stock and is necessary for recoil reduction from the reciprocating movement of the bolt group. Early prototypes had steel QD sling sockets on both sides of the stock, however current production versions will have solid steel sling loops on either side. This is to alleviate any damage that may occur to a sling that is mounted on the QD socket, and to reduce the amount of stress taken while carrying the machine gun. It also features a Picatinny rail that is longer compared to the Picatinny rail of the M240 machine guns, where the Barrett M107A1 rear sight can be mounted, along with other various optics. The design of the feed tray cover hinge has been altered to be in the shape of a hexagon, thus allowing for the feed tray cover to be able to stay open while at a 45 degree angle to the receiver while the machine gunner is loading a belt of ammunition. The feed tray has also been altered, with two protruding spring-loaded teeth which can bend in the direction of the ammunition belt. These teeth allow the operator to securely place a belt of ammunition on the feed tray while it is at an upright angle, and not have the belt slip out while closing the cover. In addition they allow the operator to be able to squeeze the front of the belt into a closed cover because the teeth only bend in the direction of the belt; the belt will pass over them, then the teeth will click upwards, thus locking the belt in place. Another click forward, and the belt of ammunition will be in place to fire. This allows the operator to feed a belt of ammunition into his 240LWS without ever having to expose his position or line of sight, when opening the feed tray cover.[26]

The position of the pistol grip and firing control group has been redesigned to make the 240LWS even shorter than the 240LW. With this, Barrett moved the entire grip forward by about four inches, to where the front of the trigger guard is at a right angle to the ejection port. By moving the fire control group forward, the overall length could be shortened because the machine gunner no longer needs the traditionally longer stock to compensate for the original position of the pistol group, which is towards the very rear portion of the receiver. Instead of the operator using a cheek weld on the stock, the operator can now rest his face against the actual receiver of the machine gun; it also allows the operator to have a closer fit of the weapon. But to do this, the bolt had to be modified accordingly, because the sear has been moved from its original location. Barrett had to move the position of the sear catch on the bolt to further down on its length. The bolt group is still the same as the original M240 design, with the exception of the position of the sear catch. Though moving the grip forward took away the ability to connect the LWS to the standard pintle adapter from the M192 Lightweight Ground Mount, Barrett made available as part of the system a new adjustable pintle adapter that works with both that are made by Military Systems Group. As of July 2017, it is not yet clear if that adapter is compatible with the M192 or M122 Traverse and Elevation (T&E) mechanism.[29] However, the primary intended use of the LWS is not to be mounted, but instead to be part of a small team that needs additional firepower while on a foot patrol.[26]

It still features a non-reciprocating bolt handle, a fluted quick detachable barrel and features a quick flip-up sight, a three-position gas regulator similar to the M240G's gas regulator, a standard M240 muzzle compensator, a quick-detach titanium bipod that has three positions, and a new redesigned handguard which no longer touches the gas tube, minimizing heat transfer to the handguard. Unlike the current M240's solution of minimizing the heat transfer, Barrett uses a free floating handguard system, where they bolted the handguard directly to the receiver of the machine gun, instead of to the gas tube assembly. The handguard also has Keymod rail sections at the 3, 6, and 9 o'clock positions, with the side sections being separated from the bottom by a gripping surface for the operator.[26]

Ohio Ordnance Works 240 edit

OOW240 GPMG edit

The OOW240 GPMG (General Purpose Machine Gun) is similar to the FN M240 but with a select fire trigger group, which is capable of semi-automatic and fully automatic fire. Ohio Ordnance Works also sells the same select fire trigger group separately and is compatible with the FN M240 and other FN MAG variants.[30]

OOW240P edit

The OO240P (Patrol) is similar to the GPMG variant but with a shorter barrel. The shorter barrel features dimpling which reduces weight while increasing heat dissipation with no loss of strength or durability. The barrels are available with either single or three position gas regulators and are fully compatible with existing blank fire adaptors.[31]

M240-SLR edit

The M240-SLR (Self-Loading Rifle) is a semi-automatic only configuration of the M240, and fires from a closed-bolt.[32]

Users edit

 
Map with M240 machine gun users in blue

Non-state users edit

See also edit

References edit

  1. ^ a b c d e f . FN Manufacturing, LLC. October 12, 2006. Archived from the original on December 23, 2010. Retrieved January 16, 2011.
  2. ^ a b c d e . FNH USA. 2011. Archived from the original on April 29, 2009. Retrieved January 16, 2011.
  3. ^ Smallwood, Michael (19 October 2015). "US M240 GPMG seen with Jabhat al-Nusra fighter in Syria". Armament Research Services. from the original on 2016-05-05. Retrieved 2016-10-17.
  4. ^ . FNHUSA.com. Archived from the original on 15 February 2012.
  5. ^ a b McNab 2018, p. 26.
  6. ^ Popenker, Maxim. "FN MAG". Modern Firearms. from the original on January 2, 2017. Retrieved November 21, 2008.
  7. ^ "Military Machine Guns". FN America. from the original on 6 June 2017. Retrieved 13 June 2017.
  8. ^ a b Lawrence, Erik (2015-03-13). Practical Guide to the Operational Use of the MAG58/M240 Machine Gun. Erik Lawrence Publications. ISBN 978-1-941998-38-0.
  9. ^ a b c d McNab 2018, p. 23.
  10. ^ Services, United States Congress Senate Committee on Armed (1991). Department of Defense Authorization for Appropriations for Fiscal Years 1992 and 1993: Hearings Before the Committee on Armed Services, United States Senate, One Hundred Second Congress, First Session, on S. 1507 ... U.S. Government Printing Office.
  11. ^ Clancy, Tom (1997-11-01). Airborne. Penguin. ISBN 978-1-101-00227-8.
  12. ^ Parsons, Dan (2022-04-20). "Here's Everything We Now Know About The Army's New Squad Rifles". The War Zone. Retrieved 2022-04-30.
  13. ^ "SAM.gov". sam.gov. Retrieved 2022-12-31.
  14. ^ a b c Pike, John. "M240 7.62mm Machine Gun". www.globalsecurity.org. from the original on 2018-01-30. Retrieved 2017-05-26.
  15. ^ "M240 7.62mm Armor Machine Gun". www.inetres.com. from the original on 2017-09-14. Retrieved 2017-05-26.
  16. ^ "FN® M240H | FN®". FN®. from the original on 2017-07-10. Retrieved 2017-05-26.
  17. ^ "Ohio Ordnance Works". ohioordnanceworks.com. from the original on 5 October 2016. Retrieved 3 October 2016.
  18. ^ "Fort Benning Soldiers evaluate redesigned buttstock for M-240B, M-249". tactical-life.com. 31 July 2009. from the original on 5 March 2012. Retrieved 3 October 2016.
  19. ^ a b Lance M. Bacon (30 April 2011). "Improved carbines headed your way". Gannett Government Media Corporation. Retrieved 30 April 2011.
  20. ^ a b "Corps Not Looking at M240L -- But a Silenced M240B?". Military.com. 2017-11-28. Retrieved 2022-12-31.
  21. ^ Herring, Nate D. (28 October 2009). . Military Daily News – Military.com. Archived from the original on 1 November 2009. Retrieved 3 October 2016.
  22. ^ (PDF). PEO Soldier. United States Army. Archived from the original (PDF) on 13 August 2011.
  23. ^ Fuller, Peter N.; Tamilio, Douglas A. (18 May 2010). (PDF). PEO Soldier. United States Army. Archived from the original (PDF) on 14 November 2011. Retrieved 28 October 2010.
  24. ^ "Soldiers play key role in fielding lighter machine gun". www.army.mil. Retrieved 2022-12-31.
  25. ^ The M240L: The Myth of the $86,000 Machine Gun 2014-10-20 at the Wayback Machine – Guns.com, 10 February 2012
  26. ^ a b c d e f "Barrett 240 LWS". Small Arms Defense Journal. from the original on 2017-06-16. Retrieved 2017-05-14.
  27. ^ "Geissele Automatics Acquire 240LW & 240LWS Design from Barrett Firearms Mfg. -". The Firearm Blog. 2020-01-15. Retrieved 2023-06-03.
  28. ^ . barrett.net. Archived from the original on 2016-12-22. Retrieved 2017-05-14.
  29. ^ "Barrett 240 LWS Ultra-Light Machine Gun—SHOT Show 2017". 3 February 2016. from the original on 2017-12-22. Retrieved 2017-07-12.
  30. ^ "OOW240 General Purpose Machine Gun (GPMG) | Ohio Ordnance Military / Government Firearms & Accessories". 2016-10-28. Retrieved 2023-04-17.
  31. ^ "OOW240P (Patrol) | Ohio Ordnance Military / Government Firearms & Accessories". 2021-06-04. Retrieved 2023-04-17.
  32. ^ "M240-SLR | Ohio Ordnance Military / Government Firearms & Accessories". 2016-10-28. Retrieved 2023-04-17.
  33. ^ El Ejértico argentino adquiere 1.200 miras y 30 ametralladoras en Estados Unidos 2019-04-19 at the Wayback Machine – infodefensa.com, 6 June 2015
  34. ^ "En fotos: Macri presentó el nuevo equipamiento del Ejército". LA NACION (in Spanish). 2019-03-15. Retrieved 2022-12-31.
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  48. ^ "Sarsılmaz PMT 7,62 makineli tüfeklerin ilk teslimatını yapıyor". 27 January 2021.
  49. ^ "Sarılmaz delivers the PMT 7.62 / SAR 240 machine gun to Turkish Army". 16 July 2021.
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  51. ^ Neville 2018, p. 37.

Bibliography edit

  • McNab, Chris (2018). The FN MAG Machine Gun: M240, L7, and other variants. Weapon 63. Osprey Publishing. ISBN 9781472819673.
  • Neville, Leigh (2018). Technicals: Non-Standard Tactical Vehicles from the Great Toyota War to Modern Special Forces. New Vanguard 257. Oxford, UK: Osprey Publishing. ISBN 978-1472822512.

External links edit

  • Chapter 3, M240B Machine Gun, Field Manual 3–22.68, Crew-Served Machine Guns, 5.56 mm and 7.62 mm, Department of the Army, 31 January 2003
  • Federation of American Scientists: M240
  • Official list of FN Military Machine Guns 2017-06-06 at the Wayback Machine

m240, machine, m240, redirects, here, israeli, jeep, derivative, storm, leica, camera, leica, russian, mortar, mortar, m240, officially, machine, m240, military, designation, family, belt, operated, medium, machine, guns, that, chamber, 51mm, nato, cartridge, . M240 redirects here For the Israeli Jeep derivative see AIL Storm For the Leica M 240 camera see Leica M Typ 240 For the Russian mortar see 240 mm mortar M240 The M240 machine gun officially the Machine Gun 7 62 mm M240 is the U S military designation for the FN MAG 6 a family of belt fed gas operated medium machine guns that chamber the 7 62 51mm NATO cartridge 1 Machine Gun 7 62 mm M240M240B equipped with a bipodTypeGeneral purpose machine gunPlace of originBelgium designed 1 United States manufactured 1 Service historyIn service1977 present 2 Used bySee UsersWarsOperation Urgent Fury Operation Just Cause Gulf War War in Afghanistan Iraq War Syrian Civil War 3 War in Iraq 2014 2017 Russo Ukrainian WarProduction historyDesignerErnest VervierDesigned1950sManufacturerFN America 1 U S Ordnance Barrett Firearms ManufacturingUnit costUS 6 600Produced1977 present 2 VariantsSee VariantsSpecificationsMass27 6 lb 12 5 kg M240B Length49 7 in 1 260 mm Barrel length24 8 in 630 mm Width4 7 in 120 mm Height10 4 in 260 mm Cartridge7 62 51mm NATO 4 ActionGas operated long stroke piston open boltRate of fireCyclic 650 750 rounds min Gas setting 1 750 850 rounds min Gas setting 2 850 950 rounds min Gas setting 3 5 Muzzle velocity2 800 ft s 853 m s 1 Effective firing range800 1 800 m 875 1 969 yd depending on mountMaximum firing range3 725 m 4 074 yd 1 Feed systemBelt fed using M13 disintegrating links 50 round ammo pouch or non disintegrating DM1 beltSightsIron sights front blade and folding rear leaf with aperture and notchThe M240 has been used by the United States Armed Forces since the late 1970s It is used extensively by infantry most often in rifle companies as well as on ground vehicles watercraft and aircraft Though it is heavier than some comparable weapons it is highly regarded for reliability and its standardization among NATO members is a major advantage All variants are fed from disintegrating belts and are capable of firing most types of 7 62 NATO ammunition M240 variants can be converted to use non disintegrating belts There are significant differences in weight and some features among some versions which restrict the interchangeability of parts The M240s used by the U S military are currently manufactured by FN America the American subsidiary of the Belgian company FN Herstal 7 The M240B and M240G are usually fired from integrated bipods tripods or vehicular mounts regarding tripod use the U S Army primarily uses the M192 lightweight ground mount while the U S Marine Corps uses the M122A1 tripod a slightly updated M2 tripod Contents 1 History 1 1 Development 1 2 Testing and adoption 1 2 1 2022 military solicitation 2 Design details 3 Variants 3 1 M240 3 1 1 M240D 3 1 2 M240H 3 2 M240G 3 2 1 M240N 3 3 M240B 3 4 M240L 3 5 Barrett 240 3 5 1 240LW 3 5 2 240LWS 3 6 Ohio Ordnance Works 240 3 6 1 OOW240 GPMG 3 6 2 OOW240P 3 6 3 M240 SLR 4 Users 4 1 Non state users 5 See also 6 References 7 Bibliography 8 External linksHistory editDevelopment edit Manufactured by the American division of the Belgian company Fabrique Nationale d Herstal 8 the FN MAG was chosen by the U S military for different roles after large worldwide searches and competitions The MAG is a belt fed gas operated air cooled crew served general purpose machine gun 8 Its versatility is demonstrated by its ability to be fired effectively from its integral bipod mounted on a tripod on ground vehicles watercraft and aircraft citation needed It was first adopted by the U S Army in 1977 as a coaxial tank gun 9 and slowly adopted for more applications in the 1980s and 1990s The M240 and M240E1 were adopted for use on vehicles 10 This led to further adoption in more uses especially for the Army and Marine Corps infantry While possessing many of the same basic characteristics as its predecessor the durability of the MAG system results in superior reliability when compared to the M60 The MAG actually has a more complex gas system than the M60 but gives better reliability combined with lower maintenance requirements though this comes at greater manufacturing cost and weight 11 Compared to other machine guns its rating of 26 000 mean rounds between failure MRBF is quite high for its weight in the 1970s when it was first adopted it achieved about 7 000 MRBF It is not as reliable as some very heavy older designs but it is quite reliable for its mass citation needed Testing and adoption edit The U S adoption of the MAG has its origins in the late 1960s and early 1970s as a project to procure a new coaxially mounted 7 62 mm machine gun for tanks to replace the M73 and M219 machine guns then being used 9 The 1950s era M73 had been rather troubled and the derivative M73E1 M219 was not much of an improvement 9 A number of designs of the period from various countries were considered the final two candidates were the M60E2 and the FN MAG which underwent comprehensive testing alongside the older M219 for comparison 9 Two main criteria analyzed were mean rounds between stoppages MRBS malfunctions that can be cleared within minutes and mean rounds between failures MRBF such as a part breaking The results for the evaluated machine guns were the following Type Rounds fired MRBS MRBFFN MAG 58 50 000 2 962 6 442M60E2 50 000 846 1 669M219 19 000 215 1 090Minimum specified 850 2 675Minimum desired 1 750 5 500 nbsp M240 coaxial machine gun aboard an M1 Abrams tankThe MAG itself underwent some improvements and the M60E2 was a specialized coaxial variant that differed from some of the other types The qualities of the M60 variants vary considerably such as between the M60E4 and the M60C The clear winner was the MAG which was designated as the M240 in 1977 after the army competition citation needed The M240 was adopted as the U S Army s standard vehicle machine gun in 1977 The Marine Corps also adopted the M240 and M240E1 for use on vehicles like the LAV 25 It then went on to replace many older types of vehicle machine guns in the 1980s U S Navy SEALs continued to use the CAR 60 M60E3 version of the M60 machine gun due to its lighter weight and slower rate of fire which allows a more effective duration of fire with allowable levels of ammunition carried citation needed The M240 proved popular enough that it was adapted by the infantry later on as the M240G and M240B The USMC adopted the M240G for this role in 1991 where it not only replaced the original M60s used by the Marine Corps infantry but also the upgraded M60E3 that the Marines had started using in the 1980s In the late 1990s the Army adopted the M240B for the infantry role they had considered the M60E4 which though lighter and cheaper did not offer commonality with the vehicle borne M240 other FN MAG users within NATO or the USMC The various versions of the M240 have not entirely replaced all the M60 versions though they have for most main applications and roles The M60 is still in some cases used by the Navy 2022 military solicitation edit As of March 2022 the United States Army had a solicitation ongoing for a M240 machine gun 6 8 51mm conversion kit to modify the 7 62 51mm NATO chambered M240B and M240L general purpose machine guns to fire the 6 8 51mm ammunition 12 13 Design details editThis section relies largely or entirely upon a single source Relevant discussion may be found on the talk page Please help improve this article by introducing citations to additional sources at this section March 2021 Learn how and when to remove this template message nbsp A US Marine inserts an ammunition belt into the feed tray of the M240GThe weapon fires from the open bolt position meaning that the bolt is held to the rear and only moves forward as it is firing a round The firing pin is static and the bolt moves around the firing pin circumventing any need for a hammer A sear is used to time the internal mechanisms of the weapon to provide a consistent rate of fire ensuring proper function and accuracy The rate of fire may be controlled by three different gas regulator settings The first setting allows the weapon to cycle at 650 750 rounds per minute the second setting being 750 850 rounds per minute and the third setting being 850 950 rounds per minute 5 These settings are changed by dismounting the barrel removing the gas regulator collar and turning the gas regulator to allow more or less gas to move through the weapon system It is generally performed only when necessary to return the gun to operation after fouling has caused sluggish operation and there is no time to properly clean the weapon citation needed The barrels can be exchanged rapidly via a barrel release button located on the left side of the weapon The weapon is cleared first and then the button is held down while the barrel s carrying handle is moved from the right side of the weapon to the center unlocking it from the receiver At this point the button is released and the barrel is then pulled free of the receiver and placed to the side The new barrel is inserted into the receiver and then the carrying handle is shifted to the right locking it into place During prolonged firing the barrels can become hot enough to inflict second degree burns instantly without becoming visibly different Variants editThis section needs additional citations for verification Please help improve this article by adding citations to reliable sources in this section Unsourced material may be challenged and removed January 2021 Learn how and when to remove this template message nbsp A Marine performs maintenance on a mounted M240 pintle mounted machine gun on a LAV nbsp An M1 Abrams tank with the tank commander s 50 caliber M2 Browning machine gun on the right side of the tank and the ammunition loader s M240 on the left side of the tank A second M240 is mounted coaxially next to the main gun nbsp M240E1 variant on a LAV 25FN Herstal first introduced the MAG general purpose machinegun in the early 1950s The M240 is the US military s adoption of the FN MAG Parts compatibly of other MAG variants adopted by other NATO members are interchangeable 2 This has significant advantages in training logistics support tactical versatility and joint operations 2 M240 edit The M240 is adapted as a coaxial machine gun for tanks and 7 62 mm fire power on light armored vehicles 14 The M240 is part of the secondary armament on the U S Army M1 series Abrams tank M2 M3 series Bradley Fighting Vehicle and the U S Marine Corps LAV 25 15 The M240E1 is the U S Marine Corps version of the original M240 coaxial pintle mounted machine gun that is used on vehicles like the LAV 25 It can also be fitted with spade grips for flexible use like the ones from the M240D The M240C is the right hand variant on the original coaxial installed alongside the main weapon M240 it is identical to the M240 except for the ammunition cover and feed tray It has a right handed feed for use on the M2 M3 Bradley Fighting Vehicle and LAV as the coaxial machine gun It is fed from the left on the M1 Abrams and other M1 variant M1A1 M1A2 M1A2 SEP tanks The M240C uses a charging cable instead of a charging handle has a cut off pistol grip and has a special paddle assembly that allows the trigger to be actuated by means of a solenoid Since the machine gun is not meant to be handled during use the barrel is fully exposed and must be handled with asbestos mittens during barrel changes The rate of fire of the M240 M240E1 and M240C can be controlled by three different gas regulator settings The first setting allows the weapon to have a cyclic rate of fire of around 650 750 rounds per minute The second setting allows the weapon to have a cyclic rate of fire of around 750 850 rounds per minute The third setting allows the weapon to have a cyclic rate of fire of around 850 950 rounds per minute M240D edit The M240D is an upgrade of the M240E1 primarily in the addition of an optical rail on the receiver cover It has two possible configurations aircraft and egress ground In the aircraft configuration the M240D has a front and rear sight and a trigger group which accommodates the spade grip device while the ground configuration involves the installation of an egress package or infantry modification kit which is designed to provide downed aircrew personnel with increased firepower The egress package contains a buttstock assembly a buffer assembly a bipod assembly and a conventional trigger assembly The barrel assembly contains a three position gas regulator The first setting allows the weapon to cycle at 650 750 rounds per minute the second gas setting allows the weapon to cycle at 750 850 rounds per minute and the third setting allows the weapon to cycle at 850 950 rounds per minute The aircraft configured M240D weighs 25 6 lb 11 6 kg and is 42 3 in 1 074 42 mm long whilst the egress configuration weighs 26 2 lb 11 9 kg and is 49 in 1244 6 mm long M240H edit The M240H formerly designated as the M240E5 14 is an improvement of the M240D the M240H features a rail equipped feed cover an improved flash suppressor and has been configured so that it can be more quickly converted to infantry standard using an Egress Kit The M240H has an overall length of 41 6 in 1056 6 mm with a 21 7 in 551 2 mm barrel and weighs 26 3 lb 11 9 kg empty and has a cyclic rate of fire of around 550 650 rounds per minute The M240H entered service in 2004 on U S Army helicopters It is equipped with dual spade grips and thumb activated trigger systems and can be quickly converted for dismounted infantry use via an egress components kit that includes a bipod and conventional pistol grip trigger module 16 M240G edit nbsp Marines with a tripod mounted M240GThe M240G allows for commonality throughout the Marine Corps whether the weapon is used in an infantry vehicular or airborne role The M240G is the ground version of the original M240 or M240E1 7 62 mm medium class weapon designed as a coaxial pintle mounted machine gun for tanks and LAVs The M240G can be modified for ground use by the installation of an infantry modification kit a flash suppressor front sight carrying handle for the barrel a buttstock infantry length pistol grip bipod and rear sight assembly The M240G lacks a front heat guard and as such is a few pounds lighter than the M240B weighing in at 25 6 lb 11 6 kg The rate of fire of the M240G can be controlled by three gas settings On gas setting one the weapon will fire at 650 750 rounds per minute on gas setting two the weapon will fire at 750 850 rounds per minute and on gas setting three the weapon will fire at 850 950 rounds per minute The size of the gas port increases resulting in greater energy being delivered to the action Use at high settings induces added stresses on the action and results in a shorter service life of the weapon It gives the operator an ability to adjust the gas bleed to the action This also allows the weapon to continue firing when very dirty from sustained use in combat conditions when it may be otherwise rendered inoperable due to an extremely dirty and dry action M240N edit The M240N is designed with a front and rear sights and configured specifically for mounting on watercraft It is similar to the M240G but lacks the integral bipod It also uses the hydraulic buffer of the M240B and features the lower cyclic rate of fire of the M240B which is around 550 650 rounds per minute 14 M240B edit nbsp An M240B in use by a U S Army soldierThe M240B formerly called as the M240E4 is the standard infantry medium machine gun of the U S Marine Corps The U S Navy and Coast Guard likewise utilize the weapon system and is also still used by some units in the U S Army It comes configured for ground combat with a buttstock and bipod though it can also be mounted on tripod ground vehicles aircraft aboard ships and small boats It is almost always referred to as the M240 Bravo or just 240 verbally 17 The M60E4 Mk 43 as designated by the Navy was pitted against the M240E4 former designation of the M240B in the Army trials during the 1990s for a new infantry medium machine gun in a competition to replace the decades old M60s The M240E4 won and was then classified as the M240B This led to 1 000 existing M240s being sent to FN for an overhaul and a special kit that modified them for use on ground such as a stock rail systems etc This led to procurement contracts in the late 1990s for the all new M240B However a new feature was added a hydraulic buffer system to reduce the felt recoil as incorporated in the M60 citation needed While the M240B had been more reliable in the tests it was a few pounds heavier than the M60E4 which led to the development of the lighter M240L The Army M240 converted to the M240B configuration should not be confused with the large numbers of M240 E1 converted to the M240G configuration for the Marine Corps nbsp A Seabee fires an M240B mounted atop a HumveeThe main differences between the M240B and M240G is the Picatinny rail system hydraulic buffer inside of the butt stock to reduce the amount of recoil felt by the gunner and the number of gas settings on the gas regulator plug The M240G has three gas settings allowing the machine gun to have a fire rate between 650 750 rounds per minute when set to the first gas setting 750 850 rounds per minute at the second gas setting and 850 950 rounds per minute at the third gas setting whereas the M240B only has one setting restricting the fire rate to between 550 650 rounds per minute The smaller gas port used on the M240B slows down the rate of fire which increases the longevity of the machine gun by reducing stresses on the action A side effect is a weapon that will not fire when extremely dirty as the energy on the piston is reduced The M240B is being tested with a new adjustable buttstock that may replace the current stock of the M240B 18 The lighter M240L has started to replace the M240B in U S Army service 19 The Marine Corps is observing the progress of the M240L but feels it is too expensive for adoption The Corps is instead looking to upgrade the M240 barrel through several ways including carbon fiber coatings new alloys or ceramic liners to lighten and strengthen the barrel The goal would be a barrel that would not need to be changed would weigh the same but decrease heat retention lessen warping and eliminate cook offs They are also interested in incorporating a suppressor into the barrel rather than having to attach one to reduce the sound of shots and make it difficult to determine where the gunner is located 20 M240L edit nbsp Weight reduced short barreled M240L the newest variant in serviceThe M240L M240 Lima formerly the M240E6 is the product of the M240B weight reduction program which reduces the weight of the existing M240B by 5 5 lb 2 5 kg 21 To achieve 18 weight savings the M240L incorporates titanium construction and alternative manufacturing methods for fabricating major components The resulting improvements reduced the soldier s combat load while allowing easier handling and movement of the weapon The M240L may replace the M240B in U S Army service 19 It was type classified in the fourth quarter of fiscal year 2010 22 23 Titanium was used to make the receiver body front sight post and carrying handle while maintaining steel operating system components Manufacture had to be adjusted because titanium takes longer to machine than steel and requires more frequent replacement of tooling bits more pliable stainless steel rivets were used and the receiver was coated with boron and chrome carbo nitride coatings with a ceramic based top coat to preserve it under extreme operating temperatures The M240L weighs 22 3 lb 10 1 kg with a standard length barrel and standard stock and weighs 21 8 lb 9 9 kg with a shorter barrel and collapsible stock The short barrel is 4 in 102 mm shorter than a standard M240 barrel and with the collapsible stock the M240L can be made 7 in 178 mm shorter The smaller and lighter variant of the M240L is the M240P The M240P is not used as often as its predecessors 24 25 The Army initially bought 4 500 M240Ls and plans to buy 12 000 total 20 Barrett 240 edit The Barrett 240 Light Weight Program has its design roots in the original U S Army solicitation for a lighter M240 medium machine gun in 2010 The program called for a much lighter version of the M240 while keeping the same open bolt design This was formally known as the M240B Weight Reduction Program or the M240E6 The results of that solicitation ended with the adoption of the M240L by the U S Army By producing the receiver out of titanium instead of steel FN delivered a light weight solution by trimming the weight of the M240B by 5 5 pounds or an 18 percent weight reduction of the original machine gun giving it an overall weight of 22 3 pounds The Lima is in limited service with the U S Army 26 Although Barrett did not participate in the solicitation program the company felt that it could produce an equivalent weight reduction by more efficient manufacturing methods instead of simply switching to the much more expensive titanium receiver In addition the company makes the point that the majority of worldwide titanium reserves are coming from Russia and China Should relations between the United States and these countries sour it would become much harder to find sources of titanium Thus Barrett designed the 240LW and 240LWS keeping the standard M240 technical data package while more efficiently manufacturing the receiver 26 In 2020 Geissele Automatics announced the acquisition of the technical data packages and intellectual property for the 240LW and 240LWS 27 240LW edit The Barrett 240LW Light Weight is a general purpose machine gun capable of mounting on a bipod tripod aircraft or vehicle It is belt fed air cooled gas operated fully automatic and fires from an open bolt It features an adjustable buttstock with a hydraulic buffer feed pawls a fluted quick detach barrel a new handguard with Keymod attachments a new quick detach titanium bipod adjustable carrying handle a rivetless receiver and a three position gas regulator 28 240LWS edit The Barrett 240LWS Light Weight Short gas operated belt fed open bolt medium machine gun is a shortened variant of the 240LW The design concept of this variant is to produce a viable medium machine gun that would serve in a special operations capacity where a small team of operators could maximize a medium machine gun by having it in a shorter and lighter package than its big brother the 240LW or the equivalent M240B This follows in the footsteps of the Mk 48 and the M60E6 medium machine guns also designed for the small unit role The Mk 48 is a variant of the M249 light machine gun scaled up to chamber 7 62 51mm NATO it has come across some issues in its service life it was never designed to be a general purpose machine gun while the M60E6 arguably came too late to make a difference in USMC and US Army general machine gun adoption being that the M240 design was already well standardized within the Department of Defense ranks Both offerings are more focused on Special Operations in US Service 26 The Barrett 240LWS features a removable and telescoping buttstock that has six adjustable positions It differs from the buttstock of the 240LW by being half of its size in length and doesn t have a polymer cheek piece There are two telescoping rods that allow the buttstock to be extended to the desired position when depressed from the top portion The rods have indentations on them which lock into positional latches within the rear of the buttstock The hydraulic buffer is permanently encased within the stock and is necessary for recoil reduction from the reciprocating movement of the bolt group Early prototypes had steel QD sling sockets on both sides of the stock however current production versions will have solid steel sling loops on either side This is to alleviate any damage that may occur to a sling that is mounted on the QD socket and to reduce the amount of stress taken while carrying the machine gun It also features a Picatinny rail that is longer compared to the Picatinny rail of the M240 machine guns where the Barrett M107A1 rear sight can be mounted along with other various optics The design of the feed tray cover hinge has been altered to be in the shape of a hexagon thus allowing for the feed tray cover to be able to stay open while at a 45 degree angle to the receiver while the machine gunner is loading a belt of ammunition The feed tray has also been altered with two protruding spring loaded teeth which can bend in the direction of the ammunition belt These teeth allow the operator to securely place a belt of ammunition on the feed tray while it is at an upright angle and not have the belt slip out while closing the cover In addition they allow the operator to be able to squeeze the front of the belt into a closed cover because the teeth only bend in the direction of the belt the belt will pass over them then the teeth will click upwards thus locking the belt in place Another click forward and the belt of ammunition will be in place to fire This allows the operator to feed a belt of ammunition into his 240LWS without ever having to expose his position or line of sight when opening the feed tray cover 26 The position of the pistol grip and firing control group has been redesigned to make the 240LWS even shorter than the 240LW With this Barrett moved the entire grip forward by about four inches to where the front of the trigger guard is at a right angle to the ejection port By moving the fire control group forward the overall length could be shortened because the machine gunner no longer needs the traditionally longer stock to compensate for the original position of the pistol group which is towards the very rear portion of the receiver Instead of the operator using a cheek weld on the stock the operator can now rest his face against the actual receiver of the machine gun it also allows the operator to have a closer fit of the weapon But to do this the bolt had to be modified accordingly because the sear has been moved from its original location Barrett had to move the position of the sear catch on the bolt to further down on its length The bolt group is still the same as the original M240 design with the exception of the position of the sear catch Though moving the grip forward took away the ability to connect the LWS to the standard pintle adapter from the M192 Lightweight Ground Mount Barrett made available as part of the system a new adjustable pintle adapter that works with both that are made by Military Systems Group As of July 2017 it is not yet clear if that adapter is compatible with the M192 or M122 Traverse and Elevation T amp E mechanism 29 However the primary intended use of the LWS is not to be mounted but instead to be part of a small team that needs additional firepower while on a foot patrol 26 It still features a non reciprocating bolt handle a fluted quick detachable barrel and features a quick flip up sight a three position gas regulator similar to the M240G s gas regulator a standard M240 muzzle compensator a quick detach titanium bipod that has three positions and a new redesigned handguard which no longer touches the gas tube minimizing heat transfer to the handguard Unlike the current M240 s solution of minimizing the heat transfer Barrett uses a free floating handguard system where they bolted the handguard directly to the receiver of the machine gun instead of to the gas tube assembly The handguard also has Keymod rail sections at the 3 6 and 9 o clock positions with the side sections being separated from the bottom by a gripping surface for the operator 26 Ohio Ordnance Works 240 edit OOW240 GPMG edit The OOW240 GPMG General Purpose Machine Gun is similar to the FN M240 but with a select fire trigger group which is capable of semi automatic and fully automatic fire Ohio Ordnance Works also sells the same select fire trigger group separately and is compatible with the FN M240 and other FN MAG variants 30 OOW240P edit The OO240P Patrol is similar to the GPMG variant but with a shorter barrel The shorter barrel features dimpling which reduces weight while increasing heat dissipation with no loss of strength or durability The barrels are available with either single or three position gas regulators and are fully compatible with existing blank fire adaptors 31 M240 SLR edit The M240 SLR Self Loading Rifle is a semi automatic only configuration of the M240 and fires from a closed bolt 32 Users edit nbsp Map with M240 machine gun users in blue nbsp Argentina 33 34 nbsp Colombia 35 nbsp Georgia Standard issue GPMG 36 nbsp Indonesia M240 M240C D used as coaxial amp pintle mounted gun on Leopard 2 Main Battle Tank 37 38 39 nbsp Iraq 40 nbsp Kurdistan 41 nbsp Japan M240C coaxial variant mounted on the AAV7 amphibious vehicle used by the JGSDF Amphibious Rapid Deployment Brigade 42 43 nbsp Poland On the M1A2 Abrams Main Battle Tank 44 nbsp Romania M240B used by Special Operations Forces 45 nbsp Spain Used on Chinooks of the Spanish Army Airmobile Force 46 nbsp Syria 2 were captured by the Syrian Army 47 nbsp Turkey License built Sarsilmaz SAR 762 MT in use 48 49 nbsp United States Standard to all units of the U S Army also used by U S Air Force Security Forces 2 nbsp Ukraine Unspecified number received during the Russian invasion in 2022 50 Non state users edit nbsp Free Syrian Army Used in their technicals 51 See also editThird Arm Weapon Interface SystemReferences edit a b c d e f M240 Family of Medium Machine Guns FN Manufacturing LLC October 12 2006 Archived from the original on December 23 2010 Retrieved January 16 2011 a b c d e FN Machine Guns M240 Series FNH USA 2011 Archived from the original on April 29 2009 Retrieved January 16 2011 Smallwood Michael 19 October 2015 US M240 GPMG seen with Jabhat al Nusra fighter in Syria Armament Research Services Archived from the original on 2016 05 05 Retrieved 2016 10 17 M240B FNHUSA com Archived from the original on 15 February 2012 a b McNab 2018 p 26 Popenker Maxim FN MAG Modern Firearms Archived from the original on January 2 2017 Retrieved November 21 2008 Military Machine Guns FN America Archived from the original on 6 June 2017 Retrieved 13 June 2017 a b Lawrence Erik 2015 03 13 Practical Guide to the Operational Use of the MAG58 M240 Machine Gun Erik Lawrence Publications ISBN 978 1 941998 38 0 a b c d McNab 2018 p 23 Services United States Congress Senate Committee on Armed 1991 Department of Defense Authorization for Appropriations for Fiscal Years 1992 and 1993 Hearings Before the Committee on Armed Services United States Senate One Hundred Second Congress First Session on S 1507 U S Government Printing Office Clancy Tom 1997 11 01 Airborne Penguin ISBN 978 1 101 00227 8 Parsons Dan 2022 04 20 Here s Everything We Now Know About The Army s New Squad Rifles The War Zone Retrieved 2022 04 30 SAM gov sam gov Retrieved 2022 12 31 a b c Pike John M240 7 62mm Machine Gun www globalsecurity org Archived from the original on 2018 01 30 Retrieved 2017 05 26 M240 7 62mm Armor Machine Gun www inetres com Archived from the original on 2017 09 14 Retrieved 2017 05 26 FN M240H FN FN Archived from the original on 2017 07 10 Retrieved 2017 05 26 Ohio Ordnance Works ohioordnanceworks com Archived from the original on 5 October 2016 Retrieved 3 October 2016 Fort Benning Soldiers evaluate redesigned buttstock for M 240B M 249 tactical life com 31 July 2009 Archived from the original on 5 March 2012 Retrieved 3 October 2016 a b Lance M Bacon 30 April 2011 Improved carbines headed your way Gannett Government Media Corporation Retrieved 30 April 2011 a b Corps Not Looking at M240L But a Silenced M240B Military com 2017 11 28 Retrieved 2022 12 31 Herring Nate D 28 October 2009 PEO Soldier Unveils New Equipment Military Daily News Military com Archived from the original on 1 November 2009 Retrieved 3 October 2016 M240L 7 62mm Medium Machine Gun Light PDF PEO Soldier United States Army Archived from the original PDF on 13 August 2011 Fuller Peter N Tamilio Douglas A 18 May 2010 Project Manager Soldier Weapons Briefing for NDIA PDF PEO Soldier United States Army Archived from the original PDF on 14 November 2011 Retrieved 28 October 2010 Soldiers play key role in fielding lighter machine gun www army mil Retrieved 2022 12 31 The M240L The Myth of the 86 000 Machine Gun Archived 2014 10 20 at the Wayback Machine Guns com 10 February 2012 a b c d e f Barrett 240 LWS Small Arms Defense Journal Archived from the original on 2017 06 16 Retrieved 2017 05 14 Geissele Automatics Acquire 240LW amp 240LWS Design from Barrett Firearms Mfg The Firearm Blog 2020 01 15 Retrieved 2023 06 03 240LW Barrett barrett net Archived from the original on 2016 12 22 Retrieved 2017 05 14 Barrett 240 LWS Ultra Light Machine Gun SHOT Show 2017 3 February 2016 Archived from the original on 2017 12 22 Retrieved 2017 07 12 OOW240 General Purpose Machine Gun GPMG Ohio Ordnance Military Government Firearms amp Accessories 2016 10 28 Retrieved 2023 04 17 OOW240P Patrol Ohio Ordnance Military Government Firearms amp Accessories 2021 06 04 Retrieved 2023 04 17 M240 SLR Ohio Ordnance Military Government Firearms amp Accessories 2016 10 28 Retrieved 2023 04 17 El Ejertico argentino adquiere 1 200 miras y 30 ametralladoras en Estados Unidos Archived 2019 04 19 at the Wayback Machine infodefensa com 6 June 2015 En fotos Macri presento el nuevo equipamiento del Ejercito LA NACION in Spanish 2019 03 15 Retrieved 2022 12 31 La Infanteria de Marina de Colombia recibe vehiculos tactitos HMMWV noticia defensa com Noticias Defensa defensa com Colombia Defensa com in Spanish 2019 05 09 Retrieved 2022 11 06 NATO standard weapons to replace Soviet arms in Georgian armament Archived from the original on 2018 05 23 Retrieved 2017 05 31 Komandan Puslatpurmar 5 Baluran Dampingi Kasdiv 2 Kostrad Kunjungi Latihan Menembak Senjata Berat marinir tnial mil id in Indonesian Retrieved 2022 03 24 Mobile Training Team Senjata Ohio Ordnance Work 2019 Yonkav 1 Kostrad Kostrad in Indonesian Retrieved 2022 03 24 OOW240 General Purpose Machine Gun GPMG Ohio Ordnance Military Government Firearms amp Accessories 2016 10 28 Retrieved 2022 03 24 Archived copy PDF Archived PDF from the original on 2017 08 22 Retrieved 2017 09 25 a href Template Cite web html title Template Cite web cite web a CS1 maint archived copy as title link State OKs Humvees howitzers for Iraqi peshmerga in ISIS fight defensenews 19 April 2017 防衛省 自衛隊 陸上自衛隊の水陸両用車の車種決定について in Japanese Archived from the original on 2015 01 09 Retrieved Oct 23 2022 水陸両用車AAV7 in Japanese Retrieved Oct 23 2022 Polish Defense Ministry Confirms Plan to Buy 250 Abrams Tanks defenseworld net Retrieved 14 September 2021 Press Release Ministerul Apărării Naționale 18 September 2012 Los helicopteros Cougar y Chinook incorporaran las nuevas ametralladoras MAG 58 M3M y M 240 Noticias Infodefensa Espana infodefensa com in Spanish 20 January 2016 Archived from the original on 31 January 2016 Retrieved 3 October 2016 A few days ago about 10 Maghawir Thowra fighters defected to the SyAA Twitter Retrieved 2020 11 30 Sarsilmaz PMT 7 62 makineli tufeklerin ilk teslimatini yapiyor 27 January 2021 Sarilmaz delivers the PMT 7 62 SAR 240 machine gun to Turkish Army 16 July 2021 Teroboronivci Zaporizhzhya pochali osvoyennya kulemeta M240 Militarnij Neville 2018 p 37 Bibliography editMcNab Chris 2018 The FN MAG Machine Gun M240 L7 and other variants Weapon 63 Osprey Publishing ISBN 9781472819673 Neville Leigh 2018 Technicals Non Standard Tactical Vehicles from the Great Toyota War to Modern Special Forces New Vanguard 257 Oxford UK Osprey Publishing ISBN 978 1472822512 External links edit nbsp Wikimedia Commons has media related to M240 machine gun Chapter 3 M240B Machine Gun Field Manual 3 22 68 Crew Served Machine Guns 5 56 mm and 7 62 mm Department of the Army 31 January 2003 Federation of American Scientists M240 Official list of FN Military Machine Guns Archived 2017 06 06 at the Wayback Machine Retrieved from https en wikipedia org w index php title M240 machine gun amp oldid 1210410536, wikipedia, wiki, book, books, library,

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