Vulcan M61 20mm Cannon

Weight 248 lb (112 kg) (excluding feed system) (M61A1)
202 lb (91.6 kg) (excluding feed system) (M61A2)
Length 73.8 in (1.88 m)
Caliber 20mm x 102mm, (HEI) 100 g (3.5 oz) (projectile)
Barrels 6
Action Hydraulically operated, electrically fired, Gatling
Rate of fire 6,000 rounds per minute (M61A1)
6,600 rounds per minute (M61A2)
Muzzle velocity 3,450 ft/s (1,050 m/s) (with PGU-28/B round)
Feed system Belt or linkless feed system