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The official Heckler & Koch submission for the Marine Corps Infantry Automatic Rifle.
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8
4. Technical Data
Weapon
Caliber: 5.56 mm x 45
Operating principle: Gas operated, firing from a closed bolt
Bolt principle: Refined rotating bolt head with multiple locking lugs
Modes of fire: Semi-automatic, full automatic
Feed device: HK High reliability 20 or 30-round steel magazines (box type)
Barrel twist: 178 mm (1 in 7” right hand twist)
Trigger pull: 4.6 – 6.0 lb.
Muzzle velocity V5 : 10.4” barrel 14.5” barrel 16.5” barrel 20” barrel(with M855 ammunition) 2,540 fps 2,790 fps 2,887 fps 3,002 fps
Chamber pressure: 52,000 psi
Cyclic rate of fire: 700-900 rounds per minute
Sustained rate of fire: 12/15 rounds per minute
Maximum effective rate of fire: SEMI-AUTOMATIC - 45 rounds per minute
Maximum effective range 10.4” barrel 14.5” barrel 16.5” barrel 20” barrel
Individual/point targets: 300 m 400 m 500 m 600 mArea targets: 400 m 500 m 600 m 800 m
Maximum range: 3,600 m
Weights
HK416, complete weapon: 10.4” barrel 14.5” barrel 16.5” barrel 20” barrel7.3 lb. 7.75 lb. 7.9 lb. 8.5 lb.
Weight, upper assembly: 10.4” barrel 14.5” barrel 16.5” barrel 20” barrel(w/o Buffer spring) 5.0 lb. 5.5 lb. 5.7 lb. 6.3 lb.
Weight, Magazine (empty): .54 lb.
Weight, Magazine (loaded): 1.3 lb.(with M855 Ammo)
Dimensions
Overall length (extended): 10.4” barrel 14.5” barrel 16.5” barrel 20” barrel30.9” 34.9” 36.9” 40.4”
Overall length (retracted): 10.4” barrel 14.5” barrel 16.5” barrel 20” barrel27.0” 31.0” 33.0” 36.5”
Height (w/o sights and magazine): 7.25”
Width: 2.25”
IAR Variant