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Belt-fed (M2 or M9 links) 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 ...
Rate of fire is the frequency at which a specific weapon can fire or launch its projectiles. This can be influenced by several factors, including operator training level, mechanical limitations, ammunition availability, and weapon condition. In modern weaponry, it is usually measured in rounds per minute (RPM or round/min) or rounds per second ...
Intended as a smaller, lighter, more capable replacement for the venerable M2 Browning machine gun, the M85 was produced by General Electric.The weapon was developed with selectable high and low rates of fire for engagement of both ground and air targets, a feature lacking in the older M2.
The M2 also appeared in a twin-mount version which paired two M2 guns with opposing feed chutes in one unit for operation by a single gunner, with a combined rate of fire of 2,400 rpm. All of the various .30 M2 models saw service in the early stages of World War II, but were phased out beginning in 1943, as hand-trained rifle-caliber defensive ...
Multiple-gun mounts were developed for the M2 Browning because the M2's rate of fire (450–550 rounds per minute) for a single gun was too low for anti-aircraft use. [2] The M45 found use throughout the war as a land-based weapon, particularly during the Battle of the Bulge.
The gun was mounted on a pedestal mount with three horizontal legs. It had a 500-650 rounds per minute rate of fire. Development continued and the M1921A1 was replaced by the water-cooled .50-caliber M2 Browning in 1933. Ground and aircraft air-cooled versions of the M2 were also adopted in 1934.
The 12.7×81mm cartridge allowed the Type 1 to fire at a rate of 900 RPM, but the poor suitability of the Browning's action to synchronization reduced the rate of fire to 400 RPM in synchronized installations. However, the Japanese source and Allied Intelligence reports did not mention that this machine gun had a propeller synchronization flaw.
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. Under STANAG 4383, it is a standard service cartridge for NATO forces.