Designed for uncompromising accuracy, durability, and reliability, this semi-automatic pistol is a civilian variation of the legendary HK416, trusted by military forces worldwide. With a cold hammer-forged barrel, a gas piston system for cleaner operation, and enhanced modularity, the MR556 A4 is built to exceed expectations in any environment.

As the world’s most popular rifle, the MR556 A4 is supported by an aftermarket loaded with lots of great accessories, from rails and handguards all the way up to everything you need to make your own legally-registered short-barreled rifle*.

Designed with cutting-edge technology and precision engineering, this rifle sets a new standard for performance, versatility, and user experience. The MCX-SPEAR-LT features a lightened handguard, offering enhanced maneuverability without sacrificing durability.

Each complete upper assembly includes our removable 3-prong flash hider ready to accept the SIG SLH & SLX suppressor systems. Also included is a receiver extension delete stock adapter so you may mount any folding or static stock or brace which uses a vertical 1913 rail system. Ppu Ammo .300 Aac Blackout 125gr. Hpbt 20 Per Box/ 50 Cs.

Heckler & Koch HK MR556-A4 11″ SBR Rifle for Law Enforcement. Trusted by law enforcement for over a decade, the Heckler & Koch MR Series was developed to solve the shortcomings of the traditional semi-automatic patrol rifle. The MR A4 is the pinnacle of that evolution, providing unmatched capability and uncompromising durability.

Designed for uncompromising accuracy, durability, and reliability, this semi-automatic pistol is a civilian variation of the legendary HK416, trusted by military forces worldwide. With a cold hammer-forged barrel, a gas piston system for cleaner operation, and enhanced modularity, the MR556 A4 is built to exceed expectations in any environment.

Fully ambidextrous controls, lighter weight and a slimmer profile make the new A4 easier to operate, manipulate and employ. For those who demand an AR with unmatched capability and …

Designed with cutting-edge technology and precision engineering, this pistol sets a new standard for performance, versatility, and user experience. The MCX-SPEAR-LT features a lightened handguard, offering enhanced maneuverability without sacrificing durability.

Fully ambidextrous controls, lighter weight and a slimmer profile make the A4 easier to operate, manipulate and employ. For those who demand an AR with unmatched capability and uncompromising reliability and durability, the MR A4s remain the top tier solution.

HK MR556 A4 223 Remington/5.56x45mm, 11" Threaded Barrel, Black, M-Lok Handguard, 10rd. HK Heckler and Koch 81001051. 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. Its short-...