Type: Assault rifle
Place of origin: United States
Designer: Eugene Stoner and L. James Sullivan
Designed: 1959
Mass: 2.89 kg (6.37 lb) (Unloaded), 3.40 kg (7.50 lb) (Loaded)
Length: 1,003 mm (39.5 in)
Barrel length: 508 mm (20 in)
Cartridge: 5.56x45mm NATO
Calibre: 5.56 mm
Action: Gas-operated, rotating bolt (direct impingement)
Rate of fire: 700-950 rounds/min (cyclic sustained), 45-60 rounds/min (semi-automatic)
Muzzle velocity: 960 m/s (3,150 ft/s)
Effective firing range: 550 m (601 yd) (point target), 800 m (875 yd) (area target)
Maximum firing range: 3,600 m (3,937 yd)
Feed system: STANAG magazine, 20-round detachable box magazine, 30-round detachable box magazine
Sights: Iron sights or various optics.
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