Heckler & Koch MR556A1 5.56mm NATO 81000580

The HK MR556A1 is a semi-automatic rifle derived from the legendary HK416 and built to excel in reliability, precision, and durability. With its proprietary short-stroke gas piston system and cold hammer forged barrel, it offers cleaner, cooler operation and exceptional accuracy under challenging conditions. Trusted globally by professionals, it delivers unmatched performance and service life exceeding military specifications.

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The HK MR556A1 is a commercial-grade firearm inspired by the world-renowned HK416, ensuring reliability, precision, and durability. Featuring a proprietary HK short-stroke gas piston operation, this semi-automatic modern sporting rifle minimizes exhaust gases entering the receiver, resulting in cooler, cleaner, and more reliable performance, especially under adverse conditions like dust, sand, and mud. Its cold hammer forged barrel, made from cannon-grade steel, includes a 1:7 twist rate and taper-bore configuration for enhanced accuracy and velocity. Trusted by elite military and law enforcement worldwide, the MR556A1 combines superior materials and meticulous craftsmanship to exceed mil-spec standards, delivering unmatched service life and performance.

Action

Barrel Length

Centerfire/Rimfire

Left Handed

Optics Ready