The Firing Line Forums - View Single Post - The M3A1 'Grease gun' was a rude, crude, and effective submachine gun

phagar · July 22, 2011, 04:35 AM

This is the end stage development of the M3A1 . It started life as a SpitFire made in Phx Az in the 1960's . The SpiteFire ran at about 800 rounds per minute. It was a real ammo waster . After replacing the internals with those of the M3A1 it runs at the more reasonable speed of about 300/350 rpm. At that rate it is able to produce single shots with only trigger control . I also replaced the M3A1's trunnion with the UZI type that made it much easier to replace barrels .

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July 22, 2011, 04:35 AM	#32
phagar Member Join Date: November 20, 2009 Location: Northern Arizona Posts: 15	This is the end stage development of the M3A1 . It started life as a SpitFire made in Phx Az in the 1960's . The SpiteFire ran at about 800 rounds per minute. It was a real ammo waster . After replacing the internals with those of the M3A1 it runs at the more reasonable speed of about 300/350 rpm. At that rate it is able to produce single shots with only trigger control . I also replaced the M3A1's trunnion with the UZI type that made it much easier to replace barrels . As produced As modified Field Stripped Detail Stripped