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The M2 ball specifications required 2,740 feet per second (835.2 m/s) minimum velocity, measured 78 feet (24 m) from the muzzle. [23] M2 ball was the standard-issue ammunition for military rifles and machine guns until it was replaced by the 7.62×51mm NATO round in 1954.
The M2 has varying cyclic rates of fire, depending on the model. The M2HB air-cooled ground gun has a cyclical rate of 450–575 rounds per minute. [30] The early M2 water-cooled AA guns had a cyclical rate of around 450–600 rpm. [31] The AN/M2 aircraft gun has a cyclic rate of 750–850 rpm; this increases to 1,200 rpm for AN/M3 aircraft guns.
T1IDP = 210 cartridges .50 linked (4 × AP M2, 1 × TR M1), 105 linked rounds in metal M2 ammo box, 2 × M2 ammo boxes per wooden crate. Volume: 0.93 Cubic Feet. T1IDS = 110 cartridges .50 linked (2 × AP-I M8, 2 × INC M1, 1 TR M10), 55 linked rounds in metal M10 ammo can, 2 × M10 ammo cans per M12 wooden crate.
Early ammunition had a 4-digit year with the first 2 digits (thousands and hundreds) at 9 o'clock and the second 2 digits (tens and ones) at 3 o'clock. Ammunition with an E at the 12 o'clock position (which stands for Ersättning, or "Substitute") have a bimetallic cartridge-case (brass-clad steel) due to wartime economy measures during World ...
The Mk 211/NM140 is graded into two accuracy classes: Class A is match grade ammunition, while Class B is ordinary linked ammunition for machine gun use. Under the international (or Norwegian) NM nomenclature, revisions are indicated by a trailing "Fn", with "F3" being the current revision as of 2020. There is also a tracer variant, the Mk 30 ...
Barrett Firearms Manufacturing is an Australian-owned, American manufacturer of firearms and ammunition located in Christiana, Tennessee.It was founded in 1982 by Ronnie G. Barrett for the purpose of building semi-automatic rifles chambered for the .50 BMG (12.7×99mm NATO) ammunition, originally developed for and used in M2 Browning machine guns.
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 machine guns became obsolete for air warfare (the .50 in/12.7 mm AN/M2 Browning and 20 mm AN/M2 automatic cannon had replaced the .30 in as offensive air armament as well). The .30 in ...
The upgrade mounts a larger Alliant Techsystems Mk44 Bushmaster II 30 mm cannon for a 500-meter range increase, as well as a coaxial .50 caliber M2 heavy machine gun. Elevation is increased to +75 degrees for engaging UAVs and helicopters, and ammunition storage is greater at 420 30 mm rounds.