Work on the SIG MG 710-3 machine gun (initially designated the Model 55, changed in 1957 to SIG MG 710) began in 1955 and its design was influenced by the MG 45, a late World War II development of the GermanMG 42machine gun. These efforts resulted in the SIG MG 710-1 (adapted to use the 6.5×55mm round) and the SIG MG 710-2 (with the 7.92×57mm Mauser cartridge), while the prototype for the final production version which would become the SIG MG 710-3 (chambered in a standard NATO7.62×51mm caliber) was completed by the mid-1960s. Currently the weapon is in use by the armed forces of Bolivia, Brunei, Chile and Liberia,[1]
Design detailsedit
The SIG MG 710-3 is an automatic, air-cooled belt-fed weapon operated by roller-delayed blowback and fires from an open bolt. The machine gun's bolt differs from other contemporary designs employing the roller-delayed blowback method of operation (such as CETME and Heckler & Koch designed weapons), being a 3-piece design that consists of a bolt head with two locking rollers, a striker sleeve and the bolt carrier which is connected telescopically with the bolt head. When a round is chambered pressure from the return spring drives the bolt and carrier assembly forward; simultaneously both rollers engage camming surfaces which drive the rollers outward from their compressed travel position into recesses in the barrel extension. Upon firing, the bolt carrier and striker assembly recoil to the rear and the geometry of the fixed camming surfaces drives the rollers inward unlocking the bolt breech and increasing the speed at which the striker sleeve withdraws relative to the bolt. As the slower bolt continues rearward it impacts the returning striker sleeve (this impact decelerates the bolt).
The bolt assembly also contains the spring extractor, while a lever case ejector is located at the base of the feed tray. Spent casings are ejected downward. The weapon has a striker firing mechanism, a trigger assembly for fully automatic only fire and a cross-bolt safety (the "safe" setting disables the bolt catch).
The SIG MG 710-3 is fed from the left side by either NATO standard disintegrating M13 (United States) or continuous link German DM1 belt, but only after swapping several parts in the feed block. When used in a light machine gun role, the ammunition belt is stored in a sheet metal container that has a 50-round capacity and is attached to the left side of the receiver. The feeding mechanism resembles the one used in the MAG machine gun (a simplified version of the MG 42's feed system) operated with a feed arm driven by the motion of the striker sleeve. The belt is fed in two stages during both the forward and rear movement of the bolt assembly.
The quick-change barrel, ended with a slotted flash suppressor, has a fixed handle used to remove it. The machine gun uses three types of barrels: a light profile, heavy profile (in a heavy machine gun role), and special type (used for firing blankammunition).
The firearm has a fixed stock (metal or wood), detachable bipod and open-type sights (rear sight is a sliding tangent with settings from 100 to 1200 m with 100 m increments). Used as a static heavy machine gun the weapon is placed on a SIG L810 tripod. It is also adapted to use an optical sight (with 2.5× magnification) or a night vision device.
The Directory of the World's Weapons. Blitz Editions. 1996. ISBN1-85605-348-2.
External linksedit
Bellum.nu
Modern Firearms
MilitaryImages.Net
December 18, 2023
this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, scholar, jstor, december, 2012, learn, when. This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources SIG MG 710 3 news newspapers books scholar JSTOR December 2012 Learn how and when to remove this template message The SIG MG 710 3 is a Swiss 7 62 mm general purpose machine gun GPMG designed and manufactured by SIG Schweizerische Industrie Gesellschaft currently Swiss Arms AG The weapon was developed as a commercial venture primarily for export since the Swiss Army had already adopted the 7 5 mm MG 51 GPMG chambered for the 7 5 55mm Swiss Schmidt Rubin rifle cartridge produced by the federal arms factory W F MG 710 3A SIG MG 710 3 from the Swedish Army Museum TypeGeneral purpose machine gunPlace of originSwitzerlandService historyUsed bySee UsersProduction historyDesignerSIGDesigned1955 1960sManufacturerSIGSpecificationsMass9 25 kg 20 39 lb Length1 143 mm 45 0 in Barrel length559 mm 22 0 in Cartridge7 62 51mm NATOActionRoller delayed blowbackRate of fire800 950 rounds minMuzzle velocity790 m s 2 592 ft s Effective firing range100 to 1200 m sight adjustmentsFeed systemNon disintegrating DM1 or disintegrating M13 linked beltSightsOpen type sights with rear sliding tangent Contents 1 Development 2 Design details 3 Users 4 See also 5 References 6 Further reading 7 External linksDevelopment editWork on the SIG MG 710 3 machine gun initially designated the Model 55 changed in 1957 to SIG MG 710 began in 1955 and its design was influenced by the MG 45 a late World War II development of the German MG 42 machine gun These efforts resulted in the SIG MG 710 1 adapted to use the 6 5 55mm round and the SIG MG 710 2 with the 7 92 57mm Mauser cartridge while the prototype for the final production version which would become the SIG MG 710 3 chambered in a standard NATO 7 62 51mm caliber was completed by the mid 1960s Currently the weapon is in use by the armed forces of Bolivia Brunei Chile and Liberia 1 Design details editThe SIG MG 710 3 is an automatic air cooled belt fed weapon operated by roller delayed blowback and fires from an open bolt The machine gun s bolt differs from other contemporary designs employing the roller delayed blowback method of operation such as CETME and Heckler amp Koch designed weapons being a 3 piece design that consists of a bolt head with two locking rollers a striker sleeve and the bolt carrier which is connected telescopically with the bolt head When a round is chambered pressure from the return spring drives the bolt and carrier assembly forward simultaneously both rollers engage camming surfaces which drive the rollers outward from their compressed travel position into recesses in the barrel extension Upon firing the bolt carrier and striker assembly recoil to the rear and the geometry of the fixed camming surfaces drives the rollers inward unlocking the bolt breech and increasing the speed at which the striker sleeve withdraws relative to the bolt As the slower bolt continues rearward it impacts the returning striker sleeve this impact decelerates the bolt The bolt assembly also contains the spring extractor while a lever case ejector is located at the base of the feed tray Spent casings are ejected downward The weapon has a striker firing mechanism a trigger assembly for fully automatic only fire and a cross bolt safety the safe setting disables the bolt catch The SIG MG 710 3 is fed from the left side by either NATO standard disintegrating M13 United States or continuous link German DM1 belt but only after swapping several parts in the feed block When used in a light machine gun role the ammunition belt is stored in a sheet metal container that has a 50 round capacity and is attached to the left side of the receiver The feeding mechanism resembles the one used in the MAG machine gun a simplified version of the MG 42 s feed system operated with a feed arm driven by the motion of the striker sleeve The belt is fed in two stages during both the forward and rear movement of the bolt assembly The quick change barrel ended with a slotted flash suppressor has a fixed handle used to remove it The machine gun uses three types of barrels a light profile heavy profile in a heavy machine gun role and special type used for firing blank ammunition The firearm has a fixed stock metal or wood detachable bipod and open type sights rear sight is a sliding tangent with settings from 100 to 1200 m with 100 m increments Used as a static heavy machine gun the weapon is placed on a SIG L810 tripod It is also adapted to use an optical sight with 2 5 magnification or a night vision device Users edit nbsp Map with SIG MG 710 3 users in blue nbsp Bolivia 1 nbsp Brunei 1 nbsp Chile 1 nbsp Liberia 1 See also editRheinmetall MG3References edit a b c d e Jones Richard D Ness Leland S eds January 27 2009 Jane s Infantry Weapons 2009 2010 35th ed Coulsdon Jane s Information Group ISBN 978 0 7106 2869 5 Further reading editThe Directory of the World s Weapons Blitz Editions 1996 ISBN 1 85605 348 2 External links editBellum nu Modern Firearms MilitaryImages Net Retrieved from https en wikipedia org w index php title SIG MG 710 3 amp oldid 1177270677, wikipedia, wiki, book, books, library,
