Heckler and Koch MR556A1 Rifle MLOK
A direct descendant of the world-famous HK416, the MR556A1 is the commercial carbine from the same DNA. It offers the battlefield-proven reliability, durability and precision you would expect from a rifle that bears the name Heckler & Koch. The MR556A1 is assembled in the USA using US and German-made components and uses many of the same parts and assemblies developed for the HK416.
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. In the “closed” HK piston system, exhaust gasses never enter the receiver, which means the HK runs cooler, cleaner and more reliably.
The MR556A1’s barrel is cold hammer forged from the highest quality cannon-grade steel. It has a 1 in 7” twist and a taper-bore configuration, with a slightly smaller diameter at the muzzle for improved accuracy and velocity. And while the material and cold hammer forging process themselves greatly enhance durability, HK’s processes include many additional steps not taken by other manufacturers to produce superior accuracy and service life, ensuring performance well beyond “mil-spec.”
Ships in HK soft case with one 30-round magazine.
HK AR15 .223 30RD Magazine - MR556, M4
Heckler & Koch steel high reliability AR15 .223, 5.56x45 30 round magazines. These superior magazines are designed to withstand the most adverse enviroments and extremes and still function. Featuring durable steel contruction of the magazine body and follower, an anti-friction type finish and a advanced high strength spring.
Out of stock
HK 417 .308 20RD Magazine - MR762
Heckler & Koch 417/MR762 .308, 7.62X51mm factory 20 round magazines. Featuring a transparent composite construction designed to withstand the most adverse enviroments and extremes and still function.
Out of stock
Sig Sauer Factory Recoil Spring, P227/P220 .45, P226 .40/357, P250 FS .40 - Green