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HK 416-417

Following the revision of the OICW Block 1/XM8 program, the Heckler & Koch company decided to enter the US military and law enforcement markets with the alternative design. Based on the experience, gained during successful upgrade program of the British SA80 / L85A1 program, HK decided to cure the existing M16 rifles and M4 carbines from most of their problems, inherent to this 40-years old design.The key improvements, made by HK, are their patented short-stroke gas piston system, borrowed from HK G36 rifle. This system replaced the direct gas system of standard M16 rifle, so no powder residue will remain in the receiver even after long shooting sessions. The “new” gas system also is self-regulating and will work reliably with any barrel length. Other improvements include new buffer assembly, improved bolt, and a cold hammer forged barrel, as well as free-floating hand guard with integral Picatinny-type rails. Originally developed as a “drop-in” upper receiver assembly for any standard M16/M4 type lower receiver, it was initially designated as HKM4, but following law suit from Colt it was renamed to HK-416. Today HK 416 assault rifle is available as a complete weapon system in several versions.

During the last decade the HK 416 family of rifles gained some momentum and appears to be heading for even more success. Adopted by a number of Special Forces and by Norwegian army, it is also in use by US Marine Corps as M27 IAR and by elite German KSK unit as G38. In 2017 HK 416F won French trials for a new general issue rifle that should eventually replace aged and worn-off FAMAS rifles.

HK-416 assault rifle is a gas operated, selective fired weapon of modular design. It uses short-stroke gas piston that operates the 7-lug rotating bolt. Receiver is made from high grade aluminium alloy. Combination-type safety / fire selector allows for single shots and full automatic mode. HK-416 retains all M16-style controls, including last round bolt hold-open device, rear-based charging handle and magazine release button on the right side of the magazine well. HK416 is fitted with four Picatinny rails as standard, and may accept any type of sighting devices on STANAG-1913 compliant mounts. It also can accept modified HK AG36/AG-C 40 mm. grenade launcher, which is clamped directly to bottom rail. Buttstock is of typical M4 design, multi-position telescoped.

HK417 assault rifle was recently developed by famous German arms-making company Heckler und Koch, as a “big brother” to the 5.56 mm HK416 assault rifle. Information on this weapon first surfaced in 2005, on the wave of new interest for the 7.62 mm NATO caliber military rifles. This interestcame in from experience of international forces gained in Afghanistan and Iraq, where increased range and penetration of the 7.62 mm NATO bullets was (and still is) quite useful. Several companies developed new or updated versions of 7.62 mm weapons, with intent to sell to military, law enforcement and in certain cases – to civilian shootersas well. The HK417 is one of such weapons. It is primarily oriented toward US market, as it mimics the popular 5.56 mm AR-15 / M16 rifles in external appearance, controls, and many design features. However, there are more than few new and original features in HK417, including Heckler-Koch’s patented piston-operated gas system,user-changeable barrels etc. Like most other competitors, HK417 riflesare available in several barrel lengths, suitable for full scale ofmilitary operations, from close combat in urban or forest areas and upto long-range accurate shooting.

HK417 rifle is a gas operated, selective fired weapon of modular design. Ituses short-stroke gas piston located above the barrel, that operatesthe 7-lug rotating bolt. Barrels are cold hammer forged, and could bereplaced by end user in several minutes using simple tools. There are four basic patterns of barrels available for HK417 as of now (2008): 305mm/12″ and 406 mm/6″ standard barrels and 406 mm/16″ and 508 mm/20″ accurized barrels. Accurized barrels provide 1 MOA accuracy (with proper ammunition). Receiver ismade from high grade aluminum alloy and consists of two parts (upperand lower), connected by two cross-pins a-la AR-15 / M16 rifles. Combination-type safety / fire selectorallows for single shots and full automatic mode. HK417 retains all M16-style controls, including last round bolt hold-open device, bolt closure device, rear-based charging handle and magazine release button on the right side of the magazine well. HK417 isfitted with four Picatinny rails on free-float handguard as standard, and will accept any type of sighting devices on STANAG-1913 compliant mounts. It also can accept modified HK AG36/AG-C 40 mm grenade launcher, which is clamped directly to bottom rail. Buttstock is of modified M4 design, multi-position telescoped. Production HK417 rifles useproprietary 10- or 20-round box magazines, made of translucent polymer (early prototypes used HK G3 magazines).

FULL INTERIOR: this gun has the individual pieces of the original gun (that can be disassembly from the gun).

Models and Materials from: world of guns: gun disassembly
animation made by me