M4 assault rifle "Osama Killer Rifle"

M4-Carbine of Colt

 

Specifications of M4-carbine

In service   :  1994–present
Manufacturer  :  Colt's manufacturing company
Weight   :  7.5 lb (3.4 kg) with 30 rounds
Length   :  33 in (840 mm) (stock extended)/29.75 in (756 mm) (stock retracted)
Caliber  :   5.56 mm (.223 in)
Action   :  Gas-operated, rotating bolt
Rate of fire   :   700–950 round/min
Muzzle velocity   :  2,900 ft/s (880 m/s)
Effective firing range   :  500 m
Feed system   :   30-round box magazine