Böcker i 21st Century Weapons & Equipment-serien

The M4 Carbine and its variants fire 5.56 x 45mm NATO ammunition and are gas-operated, air-cooled, magazine-fed, selective fire firearms with a 4-position telescoping stock. The M4 can trace its lineage back to earlier carbine versions of the M16, all based on the original AR-15 made by ArmaLite.