HECKLER AND KOCH MR556 UPPER RECR KIT

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