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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 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.
The Mark 38 25 mm machine gun system (MGS) is a shipboard weapon system designed to protect warships primarily from a variety of surface threats, especially small, fast surface craft. [1] It consists of an M242 Bushmaster chain gun mounted on a turret that can be either manually or remote controlled, depending on variant.
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 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.
The M242 Bushmaster is a 25 mm (25×137mm) chain-fed autocannon. It is used extensively by the United States and NATO forces in ground combat vehicles and watercraft. Originally, the weapon was designed and manufactured by McDonnell Douglas .
Examples of modern autocannons include the 25 mm Oerlikon KBA mounted on the IFV Freccia, [8] the M242 Bushmaster mounted on the M2/M3 Bradley, updated versions of the Bofors 40 mm gun, and the Mauser BK-27. The 20 mm M61A1 is an example of an electrically powered rotary autocannon.
A pair of M2A3 Bradleys firing their M242 chain guns in a live fire exercise. The A3's fire control software (FCSW) combines laser range, environmental readings, ammunition type, and turret control inputs to automatically elevate the gun for range and to automatically generate a kinematic lead solution if a target is moving. [58]