Thread:Alias3002/@comment-30076690-20181116002042/@comment-34517845-20181119172014

M61 Vulcan:

The M61 Vulcan is a hydraulically or pneumatically driven, six-barrel, air-cooled, electrically fired Gatling-style rotary cannon which fires 20 mm rounds at an extremely high rate. The M61 and its derivatives have been the principal cannon armament of United States military fixed-wing aircraft for fifty years. Wikipedia

Rate of fire: M61A1: 6,000 rounds per minute; M61A2: 6,600 rounds per minute

Barrels: 6-barrel (progressive RH parabolic twist, 9 grooves)

Feed system: Belt or linkless feed system

Caliber: 20 mm (0.787 in)

Muzzle velocity: 3,450 feet per second (1,050 m/s) with PGU-28/B round

Used by: United States, some NATO members, South Korea, Saudi Arabia, and others

Length: 71.93 in (1.827 m)