More weapon information:
Weapon name:
M16A2

Length: 1.003 mm (39.5 in)
Weight: 3.9 kg (8.5 lb)

Caliber:
5.56x45 mm NATO

Action:
Gas-operated, rotating bolt

Rate of fire:
600 rounds/min

Muzzle velocity:
930 m/s (~3.050 ft/s)

Effective range:
550 m (600 yd)

Feed system:
20-round detachable box magazine or
30-round detachable box magazine

Sights:
Apertured rear sight and front post sight