M3A1 Grease Gun Airsoft AEG – WWII US Submachine Gun, Full Metal

Adopted in 1944 as a cheaper, simpler answer to the Thompson, the M3A1 "Grease Gun" went on to arm US infantry, tank crews and military police for over fifty years — through Vietnam, into the Gulf War, in some cases longer. This airsoft AEG captures the stamped-tube receiver, retractable wire stock and slow rhythmic full-auto fire of the original, in full metal.

The rifle nobody else brings to the field

Walk onto a WW2 airsoft event with an M3A1 and you stand out instantly — most players carry Thompsons or BARs, very few carry the Greaser. For reenactors of late-war, Korea or Vietnam era US forces this rifle is the missing piece of the loadout, and on the modern airsoft field it's a heavy, full-metal SMG that handles CQB beautifully thanks to its 508 mm collapsed length and 3150 g weight.

Built tough

• Aluminum + steel full-metal body – authentic stamped-tube feel
• Dedicated M3A1 gearbox designed for the rifle's specific layout
• Steel sliding bearings, 7 mm
• 200 mm × 6.02 mm tight-bore inner barrel
• Adjustable hop-up
• 500-round steel hi-cap magazine in original Grease-Gun shape

Authentic full-auto-only fire

The original M3A1 only fires full-auto on a slow, rhythmic cycle — and so does this replica. No semi-auto switch, no fire mode selector, just a thumb-operated bolt cover that doubles as the safety. It's a quirk that defines the weapon, and it's preserved here exactly.

• Type: Electric AEG, full-auto only + safe
• Length: 508 mm (collapsed)
• Weight: 3150 g
• Muzzle: ~1.34 J / ~380 FPS with 0.20 g BBs
• Inner barrel: 200 mm / 6.02 mm tight bore
• Magazine: 500-rd steel hi-cap
• Hop-up: Adjustable
• Body: Full metal
• Battery: 8.4 V small Tamiya (not included)
• Best for: WW2 / Vietnam reenactors, late-war US loadouts, collectors

Want the iconic US service rifle? See the M1 Garand AEG real wood (€479) — Patton's "greatest battle implement ever devised," 1.64 J, full metal, completes any WWII American loadout.