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The M242 Bushmaster chain gun is a 25 mm (25×137mm) ... In the upgrade program, all three major systems and seven minor systems were improved.
The Mk44 Bushmaster II is a 30 mm chain gun manufactured by Northrop Grumman. It is a derivative of the 25 mm M242 Bushmaster , and uses 70% of the same parts as the M242 while increasing the firepower by as much as 50% with the 20% increase in caliber size.
It is an externally-powered, chain-driven gun. The Bushmaster uses an electric motor to drive the moving parts for ammunition feeding, loading, firing, extraction, and cartridge ejection. [2] The mass of the M242 on the Mark 38 MGS is 109 kg (240 lb). [3] The Mk 38's Bushmaster can fire all U.S. Navy-approved 25 mm ammunition, [4] including:
LAV 6 ISC (Infantry Section Carrier) - The basic IFV variant fitted with a turret and armed with a M242 Bushmaster, a coaxial C6 GPMG, and a roof mount for another C6 GPMG or C9A2. [ 1 ] [ 3 ] [ 4 ] LAV 6 CP (Command Post) - The mobile tactical command variant which lacks a turret and instead has a raised roofline on the rear half of the hull.
The cannon is a larger and more modern version of the 35 mm Bushmaster III chain gun, which itself is a larger version of the 25 mm M242 Bushmaster cannon. Although its shells, 50 x 228 mm, are twice the diameter of the 25×137mm cartridge of the M242, the 50mm cannon is not much longer than the smaller weapon. [ 2 ]
A M242 Bushmaster chain gun is fitted on a LAV III's gun turret, with a machine gun placed atop the turret. The LAV III is fitted with a two-man turret, armed with the M242 Bushmaster 25 mm caliber chain gun and a coaxial 7.62-mm machine gun. One more 5.56 mm or 7.62 mm machine guns is positioned on top of the turret.
Fourteen seconds into the video, the Bradley’s M242 Bushmaster autocannon begins spitting out M792 25-millimeter (1 inch) high-explosive-incendiary fragmentation shells. Several rounds detonated ...
The Coyotes mount a 25×137mm M242 Bushmaster chain gun. [21] The main gun and coax machine gun are 2-axis stabilized. The turret is equipped with a laser rangefinder, but no ballistic computer; elevation and lead corrections are applied manually by the gunner using multi-stadia reticules in the day, thermal, and image intensification sights.