M4A1  
Caliber : 5.56mm NATO
Action : Gas operated, rotating bolt
Overall length : 838 mm (stock extended); 757 mm (stock fully collapsed)
Barrel length : 370 mm
Weight, with empty magazine : 2.52 kg without magazine; 3.0 kg with magazine loaded with 30 rounds
Cyclic rate of fire : 700 - 950 rounds per minute
Maximum effective range : 360 m