Heckler & Koch HK416


The Heckler & Koch HK416 is an assault rifle designed and manufactured by Heckler & Koch. It uses the AR-15 platform, originally conceived as an improvement to the Colt M4 carbine family issued to the U.S. military, with the notable inclusion of an HK-proprietary short-stroke gas piston system derived from the Heckler & Koch G36. Military and law enforcement customers have the option of purchasing a new upper receiver, buffer and drive spring to refurbish existing AR-15s or; buy new build complete HK416s.

U.S. Users

Joint Special Operations Command (including Delta Force and SEAL Team 6)

Asymmetric Warfare Group of the United States Army

Containment and Emergency Response Team (CERT) of the United States Capitol Police

Special Response Team (SRT) of the Kentucky State Police

NASA Emergency Response Teams

Los Angeles Police Department Special Weapons And Tactics team

FBI Hostage Rescue Team

United States Marine Corps

Weight HK416C: 2.950 kg (6.50 lb)
D10RS: 3.020 kg (6.66 lb)
D14.5RS: 3.490 kg (7.69 lb)
D16.5RS: 3.560 kg (7.85 lb)
D20RS: 3.855 kg (8.50 lb)
M27 IAR: 3.600 kg (7.94 lb)
Length HK416C: 690 mm (27.2 in) stock extended / 560 mm (22.0 in) stock collapsed
D10RS: 797 mm (31.4 in) stock extended / 701 mm (27.6 in) stock collapsed
D14.5RS: 900 mm (35.4 in) stock extended / 804 mm (31.7 in) stock collapsed
D16.5RS: 951 mm (37.4 in) stock extended / 855 mm (33.7 in) stock collapsed
D20RS: 1,037 mm (40.8 in) stock extended / 941 mm (37.0 in) stock collapsed
M27 IAR: 940 mm (37.0 in) stock extended / 840 mm (33.1 in) stock collapsed
Barrel length HK416C: 228 mm (9.0 in)
D10RS: 264 mm (10.4 in)
D14.5RS: 368 mm (14.5 in)
D16.5RS: 419 mm (16.5 in)
D20RS: 505 mm (19.9 in)
M27 IAR: 420 mm (16.5 in)
Width 78 mm (3.1 in)
Height HK416C: 236 mm (9.3 in)
HK416 and M27 IAR: 240 mm (9.4 in)
Cartridge 5.56×45mm NATO
Action Short-stroke piston, rotating bolt
Rate of fire 700 – 900 rounds/min (cyclic) HK416
850 rounds/min (cyclic) HK416A5
Muzzle velocity Varies by barrel length and type of round used.
Feed system 20, 30-round STANAG magazine or 100-round Beta C-Mag
Sights Rear rotary diopter sight and front post, Picatinny rail


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