ArmaLite AR-15

The ArmaLite AR-15 is a selective-fire, 5.56×45mm, air-cooled, direct impingement gas-operated, magazine-fed rifle, with a rotating bolt and straight-line recoil design. It was designed above all else to be a lightweight assault rifle, and to fire a new lightweight, high velocity small caliber cartridge to allow the soldier to carry more ammunition.


Weapon type:Assault rifle
Weight:2.97 kg (6.55 lb)
Calibre & cartridge:5.56×45mm NATO
Capacity:25 rounds
Effective range:457 m (500 yd)
Rate of fire:750 rounds/min
Designer:Eugene Stoner, Jim Sullivan and Bob Fremont
Action:Gas-operated, rotating bolt
In service:1959–1990s
Muzzle velocity:1,006 m/s (3,300 ft/s)