A direct descendant of the HK416, the HK MR556 for sale offers impeccable durability, precision, and battle proven reliability. This rifle utilizes a "closed" short stroke gas piston system …

The MR556A1 is an improved version of the MR556 with a free floating modular rail system, Picatinny rail, and interchangeable receiver assemblies. The MR556A1 is the civilian version of the HK416, a fully automatic weapon used by Navy Seals still today.

This HK 416A5 custom “conversion” is assembled using a factory MR556 as the base rifle (MR556 rifle included). The rifle is accessorized, machined and re-marked to mimic the 416A5 as closely as possible (with the standard A1 MR556 receiver set ).

This HK G95/G95K (416A7) custom “conversion” is assembled using a factory MR556A4 as the base rifle (MR556A4 rifle included). The rifle is accessorized, machined and re-marked to mimic the G95K as closely as possible (new style, short through selector markings).

HK MR556 New and Used For Sale - Price: $4,065.89. There are currently 4 In Stock from 2224 Dealer Stores.

Like the HK416, the MR556A1 uses a proprietary HK short-stroke gas piston in place of the direct-gas-impingement system found on lesser AR15-style rifles that propels exhaust gas into the upper receiver to operate the action.

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MR556A1 barrels are unlined for superior accuracy, while maintaining exemplary service life under semi-automatic fire.The MR556A1 barrel has six lands and grooves and a 1 in 7" twist. It is a taper-bore configuration with a slightly smaller internal diameter at the muzzle than at the chamber end for improved accuracy and velocity.

HK MR556 A4 Rifle- 8100027. Semi automatic 5.56/.223 AR15 rifle with a 16.5" cold hammer forged barrel. Its short-stroke gas piston operating system does not impart hot carbon fouling …

Utilizing a proprietary, closed HK® gas piston and pusher-rod operating system, the HK MR556-A1 FDE Semi-Auto Rifle is a virtually flawless weapon system, ideal for a variety of combat and civilian...