The M134 Mini-Gun is a 7.62×51mm NATO, six-barrel rotary machine gun with
a high rate of fire (2,000 to 6,000 rounds per minute) which can also
fire at a high-sustained rate.[1] It features Gatling-style rotating
barrels with an external power source, normally an electric motor. The
"Mini" in the name is in comparison to larger caliber designs that use a
rotary barrel design, such as General Electric's earlier 20-millimeter
M61 Vulcan, and "gun" for the use of rifle caliber bullets instead of
shells used by an Auto-Cannon.

The Mini-Gun is used by several branches of the U.S. military. Versions are designated M134 and XM196 bythe United States Army, and GAU-2/A and GAU-17/A by the U.S. Air Force
and U.S. Navy.

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