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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.
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 ]
The primary component of the Mk 38 is the 25 mm M242 Bushmaster. 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 M242 25 mm chain gun. A chain gun is a type of autocannon or machine gun that uses an external source of power to cycle the weapon's action via a continuous loop of chain, similar to that used on a motorcycle or bicycle, instead of diverting excess energy from the cartridges' propellant as in a typical automatic firearm.
A Bradley firing the M242 25 mm (1 in) chain gun The Bradley is equipped with the 25 mm M242 Bushmaster as its main weapon. The M242 is a single-barrel chain gun with an integrated dual-feed mechanism and remote feed selection.
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.
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.
1st Light Armored Reconnaissance Battalion is a fast and mobilized armored terrestrial reconnaissance battalion of the United States Marine Corps.Nicknamed the "Highlanders," their primary weapon system is the LAV-25 Light Armored Vehicle armed with the M242 25mm Bushmaster chain gun.