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The MG 131 (shortened from German: Maschinengewehr 131, or "machine gun 131") was a German 13 mm caliber machine gun developed in 1938 by Rheinmetall-Borsig and produced from 1940 to 1945. The MG 131 was designed for use at fixed, flexible or turreted , single or twin mountings in Luftwaffe aircraft during World War II .
The machine gun feeds from a proprietary 100-round synthetic drum magazine (early models also used 60-round drum magazines), or from a modified 20 or 30-round STANAG 4179 magazine (from the M16 rifle). [1] An unusual feature among modern machine guns is the fact the Ultimax was purposely designed to feed from magazines as opposed to belts.
The weapon features a hybrid gas and recoil operated action. The gas system cycles the bolt group with the receiver recoils inside the outer gun housing to decrease peak recoil. The gun uses a direct impingement gas system, similar to Type 85 machine gun. Type 89 was named "lightweight heavy machine gun" due to its lightweight gun and tripod. [3]
Colleoni machine gun — 6.50×52mm Mannlicher–Carcano: Ammunition belt Italy: 1908 Colt Machine Gun: Colt's Manufacturing Company: 5.56×45mm NATO: Ammunition belt United States: 1965 Colt Automatic Rifle: 5.56×45mm NATO: Detachable box magazine United States: 1982 Darne machine gun: Hotchkiss et Cie: 7.50×54mm French 8.00×51mmR French ...
Twin-barrelled variant: The ILARCO company manufactured the American 180 in a twin-gun configuration. The two receivers were mounted on a single stock that weighed more than 14 lb (6.4 kg), with a rate of fire over 3,000 rounds per minute. [9] Quad-barrelled variant: The ILARCO company manufactured the American 180 in a quad-gun configuration.
The MG-42 type general-purpose machine guns in both bipod and tripod configurations. The tall tripod on the right is for anti-aircraft use. A general-purpose machine gun (GPMG) is an air-cooled, usually belt-fed machine gun that can be adapted flexibly to various tactical roles for light and medium machine guns. [1]
High-impulse ammunition drives the bolt all the way to the end of the receiver, lightly striking the receiver wall. A rate of fire of 700–750 rounds per minute is the result. Due to the slow cyclic rate, it has the effect of reducing perceived recoil and increasing firing stability and hit probability.
A homemade firearm, also called a ghost gun or privately made firearm, is a firearm made by a private individual, in contrast to one produced by a corporate or government entity. [1] The term ghost gun is used mostly in the United States by gun control advocates, but it is being adopted by gun rights advocates and the firearm industry. [2]