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M3A1 Grease Gun

Smg Savage Arms
M3A1 Grease Gun by Savage Arms

Photo: Curiosandrelics — CC BY-SA 3.0 · license · via Wikimedia Commons

Technical Specifications

Type Submachine gun
Country of origin United States
Manufacturer General Motors, others
Designer George Hyde
Designed 1942
Produced 1943–1945; early 1950s
In service 1943–present
Used by See Users
No. built Total: 655,363 * M3: 606,694 * M3A1: 48,669
Unit cost Approx. US$20 (1943; )
Length stock extended / 21.9 in stock collapsed
Barrel length 8 in
Action Blowback, open bolt
Feed 30-round or 32-round detachable box magazines
Range Sights fixed to 100 yd

Data from M3 submachine gun (Wikipedia, 2026-09-22). Text licensed under CC BY-SA. Image: CC BY-SA 3.0 — Curiosandrelics.

Compatible Calibers (1)

.45 ACP
Pistol
Bullet: 11.43mm
Case: 25.45mm
.45 Automatic

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