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…

The latest update from HK-USA to the commercial variant of the legendary HK416, the MR556 A4 represents an enhanced example of “no compromise” HK performance. Chambered in 5.56 x 45mm, its short-stroke gas piston operating system does not impart hot carbon fouling back into the action, allowing the weapon to…

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 resulting in a firearm that performs cleaner, cooler, and more reliably, making direct gas impingement system malfunctions a thing of the past.

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.

Introducing Heckler and Koch’s all new MR556, the HK MR556 A4 Gas Piston 5.56 AR15 Rifle with new M-LOK Rail and adjustable two way gas block. The HK MR556-A4 5.56 AR15 Semi Auto Rifle is out fitted with Heckler and Koch’s new cold …

Heckler & Koch MR556 .223 Rem/5.56 Semi-Automatic AR-15 Rifle - MR556LC-A1 . Out of Stock. Notify When In Stock. Add to Wish List Add to Compare. H&K MR .223 Rem/5.56 AR-15 Rifle - MR556-A1 . Out of Stock. Notify When In Stock. Add to Wish List Add to Compare. View as Grid View List View. 17 Items ...

MANUFACTURER: Heckler and Koch (HK USA) FAMILY: MR556 Series MODEL: MR556 A4 TYPE: Rifle ACTION: Semi-Auto CALIBER/GAUGE: 223 Rem | 5.56 NATO FINISH: Black FINISH TYPE: Black STOCK: Collapsible / Folding Stock STOCK/GRIPS: HK416 Slimline Furniture BARREL: 16.5" OVERALL LENGTH: 33.25" to 36.5" RATE-OF-TWIST: 1-in-7" CAPACITY: 10 + 1 # OF ...

A direct descendent of the HK416, the MR556A1 is a semi-automatic rifle developed by Heckler & Koch as a premium level commercial/civilian firearm with match rifle capability. Like the HK416, the MR556A1 is a major product improvement over conventional AR-type carbines and rifles.

HK MR556 5.56mm NATO 16.5in Black Semi Automatic Modern Sporting Rifle - 30+1 Rounds - A direct descendant of the HK416, the MR556A1 is a semi-automatic rifle configuration with match rifle capability developed for civilian users.

The latest update from HK-USA to the commercial variant of the legendary HK416, the MR556 A4 and MR762 A4 represent an enhanced example of “no compromise” HK performance.