The M2 Machine Gun or Browning .50 Caliber Machine Gun is a heavy machine gun designed towards the end of World War I by John Browning.
The M2HB (heavy barrel) air-cooled ground gun has a cyclical rate of 450-575 rounds per minute.The AN/M2 aircraft gun has a cyclic rate of 750–850 rpm; this increases to 1,200 rpm or more for AN/M3 aircraft guns fitted with electric or mechanical feed boost mechanisms. The M2HB can be selected to fire single-shots or at less than 40 rounds per minute, or rapid fire for more than 40 rounds per minute. Slow and rapid firing modes use 5-7 round bursts with different lengths of pause between bursts.
The M2 has an effective range of 1,830 metres (2,000 yd) and a maximum effective range of 2,000 metres (2,200 yd). The gun itself weighs 84 pounds (38 kg) and the assembled M3 tripod another 44 pounds (20 kg).
Specifications
Weight : 38 kg (83.78 lb)/58 kg (127.87 lb) with tripod
Length : 1,654 mm (65.1 in)
Cartridge : .50 BMG (12.7×99mm NATO)
Action : Short recoil-operated
Rate of fire : 450-600 rounds/min (M2HB) and 1,200 rounds/min (AN/M3)
Effective firing range : 1,800 m (2,000 yd)
Maximum firing range : 6,800 m (7,400 yd)
Produced : 1921 – present (M2HB)
Number built : 3 million
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