M3 Grease Gun

This weapon was developed during WWII when there was a need for a gun that was easy to mass produce. The weapon was made from stampings with little in the way of machined parts except the barrel and bolt. It worked by blowback and there was no provision for firing single rounds. The lack of single shot was not a problem as its cyclic rate was low. Its nickname came about due to the guns close resemblence to a grease gun. The gun worked by blowback and had a retractable wire stock. The weapon was 29.8" long with an 8" barrel and a muzzle velocity of 920 f/s.