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The M242 Bushmaster chain gun is a 25 mm (25×137mm) single-barrel chain-driven autocannon. It is used extensively by the U.S. military , such as in the Bradley fighting vehicle , as well as by other NATO members and some other nations in ground combat vehicles and various watercraft.
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:
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.
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 ]
Japanese 25×163mm ammunition from a post-war US technical manual A diagram of the M791 25×137mm round. Several sub-types of the NATO 25 mm ammunition are available—the most common being armor-piercing, high-explosive, sabot, tracer, and practice rounds.
The standard LAV is fitted with a turret with 360° traverse, armed with an M242 25 mm chain gun with 420 rounds of 25 mm ammunition, both M791 APDS-T (Armour Piercing Discarding Sabot-Tracer) and M792 HEI-T (High Explosive Incendiary-Tracer), of which half is ready for use. 150 rounds are ready for use from one stowage bin, 60 from another ...
The ramp allows the deployment and retrieval of her high speed water-jet powered pursuit boat without first coming to a stop. She is capable of more than 25 knots (46 km/h; 29 mph) and armed with a remote controlled 25 millimetres (0.98 in) M242 Bushmaster autocannon; and four crew-served Browning M2 machine guns.
A crew consists of a driver, usually the least senior 0313 (MOS designation for LAV Crewman), a VC and the gunner. The gunner operates the main gun, the M242 Bushmaster chaingun. The VC makes target acquisition changes and helps the gunner make adjustments. The remaining crew consists of Scouts . The LAV can hold four scouts, but under the ...