Machine Gun Monday – GAU-19 A/B


The Gecal 50 is a .50cal Gatling Gun Adopted by Many Militaries.


The GECAL 50 was first manufactured by General Electric, then by Lockheed Martin, and now by General Dynamics. Design work began in 1982. Early prototypes had six barrels, but a three-barreled configuration is now standard. The GAU-19/A was originally designed as a larger, more potent version of the M134 Minigun.

Due to the loss of nine helicopters in Grenada GE started building prototypes of the weapon in both a three-barreled and a six-barreled configuration. The six-barreled version was designed to fire 4,000 rpm, and could be adapted to fire up to 8,000 rpm. The GAU-19 takes 0.4 seconds to reach maximum firing rate. Soon it was recommended as a potential armament for the V-22 Osprey. The magazine would be located underneath the cabin floor and could be reloaded in-flight. However, plans to mount the gun were later dropped. In 2005, the GAU-19/A was approved to be mounted on the OH-58D Kiowa helicopter. It also could have been used on the Army’s now cancelled ARH-70. In January 2012, the U.S. Army ordered 24 GAU-19/B versions for use on helicopters. All were delivered by the next month.


  • Weight: With feeder and transfer unit:139 lbs.
  • Length: 53.9 in.(
  • Barrel length: 36 in.
  • Width: 13.5 in
  • Height: 15 in.
  • Cartridge: .50 BMG
  • Barrels: 3
  • Action: Electric
  • Rate of fire: 1,000 or 2,000 rounds per minute
  • Muzzle velocity: 2,910 fps
  • Effective firing range: 1,800 m
  • Maximum firing range: 6,000 m
  • Feed system: linkless or M9 linked belt
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