M21
From Wikipedia, the free encyclopedia
M21 or M-21 may be:
- M21 (rifle), sniper rifle
- M21S Assault Rifle - 5.56 mm assault rifle, manufactured by Zastava Arms
- M-21 variant of A-12 Oxcart with Lockheed D-21 drone
- BSA m21
- M-21 (Michigan highway), a highway in Michigan connecting the cities of Flint and Grand Rapids
- Open Cluster M21, a Messier object
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