HK

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-stroke gas piston operating system does not impart hot carbon fouling back into the action, allowing the weapon to run longer, with less maintenance and with less wear on internal components than direct-impingement ARs. Its adjustable gas regulator allows the operator to tune the action specifically for suppressed or unsuppressed operation. 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 uncompromising reliability and durability, the MR A4s remain the top tier solution.

Frame Finish: Black
Firearm Stock: Black Synthetic Adjustable
Trigger: 2-Stage
UPC: 642230269408
Product Name: H&K MR556 A4 16.5B 30RD
Weight: 7.67 lbs.
SKU: 81000827
Barrel Configuration: Single
Finish: Black
Firing System: Internal Hammer
Forend Rail: Free Float M-LOK Handguard
Magazine Type: Double Stack Magazine
Model Series: MR556
Muzzle: Flash Hider
Operating System: Gas Piston
Rifled Barrel: Yes
Safety: Manual Safety
Scope Base: Picatinny Rail
Threaded Barrel: Yes
Barrel Description: Cold Hammer-forged
Minimum/Overall Length: 36.5 in.
Magazine Count: 1.00