- Type
- Semi-automatic rifle (M1), Selective-fire assault rifle (M2/M3)
- Place of origin
- United States
- In service
- 1942–1973 (United States) 1942–present (other countries)
- Used by
- See Users
- Designer
- Fred Humeston William C. Roemer David Marshall Williams
- Manufacturer
- Military contractors Commercial copies
- Unit cost
- About $45 (WWII) (equivalent to $840 in 2025)
- Produced
- July 1942 – August 1945 (U.S. military) 1945–present (commercial)
- Number span no built
- 6,121,309 (WWII)
- Variants
- See Variants
- Mass
- 5.2 lb (2.4 kg) empty 5.8 lb (2.6 kg) loaded w/sling
- Length