MIL-G-45500/1, MILITARY SPECIFICATION SHEET: GUN, AUTOMATIC, 20MM: M61 AND M61A1 (30-JUL-1974) [S/S BY MIL-DTL-45500/1]

MIL-G-45500/1, MILITARY SPECIFICATION SHEET: GUN, AUTOMATIC, 20MM: M61 AND M61A1 (30-JUL-1974) [S/S BY MIL-DTL-45500/1]., This specification is approved for use by all Departments and Agencies of the Department of Defense. The complete requirements for procuring the gun described herein shall consist of this specification sheet and the issue of MIL-G-45500E. This specification sheet covers a type of six-barrel, electrically fired, 20 millimeter (mm) automatic guns M61 and M61A1. The gun utilizes an ammunition feeder and is power driven through its cycle of operation by either an electric or hydraulic drive, or ram air turbine for installation in an aircraft armament pod system.