SNOW WOLF M3A1 GREASE GUNGrease Gun M3A1 Submachine Gun AEG. A replica of a legendary, American submachine gun commonly referred to as “grease gun” in A1 version by Snow Wolf is another treat for all World War II enthusiasts. The body of the replica is made from steel, whereas the barrel and small elements are made from an alloy of zinc and aluminium. Grease gun bears weld imitations as well as various “imperfections” tied to the manufacture process of the original – of course in the case of the replica it is fully intentional and positively influences the resemblance towards the live firearm. Like the original, it comes in full auto fire, however, after a bit of practice and a correctly selected battery one can learn to fire single rounds. Fed with a steel, hi-cap, 520 BB magazine. A safety in the form of shell ejection cover (cover the shell ejector in order to put the safety on) just like the original.