Technical data

TM 9-1005-319-23&P 0002
0002-4
EQUIPMENT DATA
PHYSICAL CHARACTERISTICS
Weight:
Carbine, M4, without magazine and sling ............................................................................... 6.44 lb (2.92 kg)
Carbine, M4A1, without magazine and sling ..........................................................................7.81 lb (3.54 kg)
Rifle, M16A2, without magazine and sling..............................................................................7.50 lb (3.40 kg)
Rifle, M16A3, M16A4, without magazine and sling................................................................7.81 lb (3.54 kg)
Sling, adjustable ........................................................................................................................0.25 lb (0.11 kg)
Empty magazine ........................................................................................................................0.25 lb (0.11 kg)
Loaded magazine .......................................................................................................................1.06 lb (0.48 kg)
Carbine, M4, w/sling and loaded magazine ............................................................................. 7.75 lb (3.51 kg)
Carbine, M4A1, w/sling and loaded magazine......................................................................... 8.63 lb (3.91 kg)
Rifle, M16A2, w/sling and loaded magazine ............................................................................8.81 lb (4.00 kg)
Rifle, M16A3, M16A4, w/sling and loaded magazine ..............................................................9.13 lb (4.14 kg)
Bayonet-Knife, M7.....................................................................................................................0.66 lb (0.30 kg)
Scabbard, M10 ...........................................................................................................................0.31 lb (0.14 kg)
Length:
Carbine with compensator, buttstock extended .................................................................. 33.0 in. (83.82 cm)
Carbine with compensator, buttstock closed .....................................................................29.75 in. (75.57 cm)
Rifle with compensator...................................................................................................... 39.63 in. (100.66 cm)
Barrel (Carbine).....................................................................................................................14.5 in. (36.83 cm)
Barrel (Rifle) ............................................................................................................................... 20 in. (50.8 cm)
Barrel with compensator (Carbines) .................................................................................... 15.5 in. (39.37 cm)
Barrel with compensator (Rifles)............................................................................................. 21 in. (53.34 cm)
Mechanical Features:
Rifling ...........................................................................Right-hand twist 6 grooves, 1 turn in 7 in. (17.78 cm)
Method of operation.............................................................................................................................Direct gas
Type of breech mechanism.............................................................................................................Rotating bolt
Method of feeding ................................................................................................................................ Magazine
Cooling............................................................................................................................................................. Air
Trigger pull (M16A2, M16A4, & M4) .................................................................. 5.5 to 9.5 lb (2.49 to 4.31 kg)
Trigger pull (M16A3 & M4A1)............................................................................. 5.5 to 8.5 lb (2.49 to 3.86 kg)
Ammunition:
Caliber ..................................................................................................................................................... 5.56mm
Type ................................................................................................. Ball, blank, dummy, tracer, and frangible
FIRING CHARACTERISTICS
Muzzle velocity (Carbines) (approximate) ......................................................................... 2,970 fps (905 mps)
Muzzle velocity (Rifles) (approximate) ............................................................................... 3,100 fps (945 mps)
Chamber pressure .......................................................................................................52,000 psi (358,540 kPa)
Cyclic rate of fire (Carbines) (approximate)............................................................................700 to 970 rds/m
Cyclic rate of fire (Rifles) (approximate) .................................................................................700 to 900 rds/m