The Mk44 Bushmaster II is a 30 mm chain gun manufactured by Alliant Techsystems. It is a derivative of the 25 mm M242 Bushmaster, and uses some 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 barrel is chromium-plated for extended life.

Caliber
30 x 173mm NATO
Firearm action
Chain gun
Manufactured by
ATK
Barrel Length
134.05 in (3.405 m)
Effective Range
2,000 m (2,200 yd)
Maximum Range
3,000 m (3,300 yd)
Maximum ROF
200 rounds per minute
Muzzle velocity
1,405 m/s (4,610 ft/s)
Total Weight
154.6 kg (341 lb)