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The M2 machine gun or Browning .50 caliber machine gun (informally, "Ma Deuce") [14] [15] is a heavy machine gun that was designed near the end of World War I by John Browning. While similar to Browning's M1919 Browning machine gun , which was chambered for the .30-06 cartridge, the M2 uses Browning's larger and more powerful .50 BMG (12.7 mm ...
The GAU-19/A is designed to accept standard NATO .50 caliber M9-linked ammunition. The rate of fire is selectable to be either 1,000 or 2,000 rounds per minute. The Humvee armament kit version fires at 1,300 rounds per minute. The average recoil force when firing is 382 lb/ft, 495 lb/ft or 629 lb/ft depending on firing rate.
The first .50 caliber machine gun underwent trials on 15 October 1918. It fired at less than 500 rounds per minute, and the muzzle velocity was only 2,300 ft/s (700 m/s). Cartridge improvements were promised. [6] The gun was heavy, difficult to control, fired too slowly for the anti-personnel role, and was not powerful enough against armor. [7]
The M45 Quadmount was a towed anti-aircraft gun consisting of four .50 caliber M2 Browning machine guns mounted in pairs on either side of an armored open-top gunner's compartment with electrical laying.
The XM806 Lightweight .50 Caliber Machine Gun (LW50MG) was a developmental .50 caliber belt-fed heavy machine gun. [2] Development began in 2009 and was cancelled in 2012. Design
The XM312 is a heavy machine gun derived from the XM307 25 mm autocannon and chambered for the .50 BMG cartridge. It was designed in response to a request by the U.S. military for a replacement for the aging M2 Browning heavy machine gun, and as a complement to the heavier XM307 Advanced Crew Served Weapon grenade launcher.
The Mk 211 is a very popular .50 caliber sniper round used in the Barrett M82 rifle and other .50 BMG rifles. [5] It is also often used in heavy machine guns such as the M2 Browning. Due to its popularity, several U.S. arms manufacturers produce the round under license from NAMMO Raufoss AS. [6]
The .50 BMG (.50 Browning Machine Gun), also known as 12.7×99mm NATO, and designated as the 50 Browning by the C.I.P., [1] is a .50 in (12.7 mm) caliber cartridge developed for the M2 Browning heavy machine gun in the late 1910s, entering official service in 1921.