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Heckler & Koch HK416 Country of origin Germany Designer Ernst Mauch Weapon type Assault rifle Caliber 5.56 x 45 mm NATO Action Gas-operated, Rotating bolt Overall length HK416C: 690 millimeters stock extended / 560 millimeters stock collapsed D10RS: 797 millimeters stock extended / 701 millimeters stock collapsed D14.5RS: 900 millimeters stock extended / 804 millimeters stock collapsed D16.5RS: 951 millimeters stock extended / 855 millimeters stock collapsed D20RS: 1,037 millimeters stock extended / 941 millimeters stock collapsed Barrel length HK416C: 228 millimeters D10RS: 264 millimeters D14.5RS: 368 millimeters D16.5RS: 419 millimeters D20RS: 505 millimeters Weight empty HK416C: 2.950 kilograms D10RS: 3.020 kilograms D14.5RS: 3.490 kilograms D16.5RS: 3.560 kilograms D20RS: 3.855 kilograms Cyclic rate 700-900 rounds per minute

The HK416 is an assault rifle that bears many external resemblances to the M4A1 Carbine but is internally different. It features an HK proprietary short stroke gas piston system derived from the HK G36 family of assault rifles

Contents 1 History 2 Design details 3 Variants 4 See also 5 References

HistoryEdit

It is currently in use by some United States Special Operations Units as a replacement for the M4, and the Norwegian Armed Forces as a replacement for the AG3. It is also used by some European

Special forces like the Polish GROM and the German KSK.

Design detailsEdit

The HK416 is very similar to the M4 in appearance, but is different internally. The primary difference between this weapon and the M4 series is the short-stroke offset piston system, replacing the expanding gas inline piston system usually found in AR-pattern rifles. The mechanism of the rifle is actually closer to the H&K G36, rather than AR-pattern rifles. The HK416 has a slightly larger diameter bolt (.53 overall diameter (OD), as opposed to .512 OD) than the AR-15 does; an AR-15 bolt will fit in the HK416 carrier, rather loosely.^[1]

The HK416 has a quad rail to mount a variety of accessories and can mount the AG36 grenade launcher in seconds without any modifications. It also comes in a 7.62x51mm version called the HK417 which makes it a rival to the FN SCAR-L and FN SCAR-H that are currently in trials with US SOCOM. An HK416 upper receiver can fit on any AR-15 lower receiver without modification.

VariantsEdit

MR556: The MR556 is the HK416, but with a semi-auto FCG.

See alsoEdit

• http://www.defenseindustrydaily.com/images/ORD_HK416_Labeled_lg.jpg

ReferencesEdit

1. ↑ http://www.m4carbine.net/showpost.php?p=1322511&postcount=66