H&K Firearms

Heckler & Koch MR556 A1 | 5.56 NATO

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MSRP: $3,499.00
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H&K MR556A1 at Freedom Weapons: Embodying the Legacy of HK416 Excellence

Experience the H&K MR556A1 at Freedom Weapons - a commercial carbine that merges HK416's legacy with modern innovations. Dive into unparalleled reliability, durability, and precision.

H&K MR556A1: Battlefield-Proven Excellence with Heckler & Koch's Legacy

Freedom Weapons is thrilled to showcase the H&K MR556A1, a commercial carbine that's a direct descendant of the globally acclaimed HK416. This rifle embodies the unparalleled reliability, durability, and precision that's synonymous with the Heckler & Koch name.

Assembled in the USA, the MR556A1 harmoniously blends US and German-made components, leveraging many of the same parts and assemblies that the HK416 is renowned for. Unlike the conventional direct-gas-impingement system found in many AR15-style rifles, the MR556A1 boasts HK's proprietary short-stroke gas piston. This "closed" piston system ensures that exhaust gases never enter the receiver, resulting in a cooler, cleaner, and more reliable operation. Especially under challenging conditions like dust, sand, and mud, the superiority of the HK system becomes evident, a testament to why the world's elite military and law enforcement units place unwavering trust in their HK firearms.

The MR556A1's barrel stands out, cold hammer-forged from the finest cannon-grade steel. With a 1 in 7” twist and a unique taper-bore configuration, it promises enhanced accuracy and velocity. HK's meticulous manufacturing processes, including their renowned cold hammer forging, ensure a barrel that not only exceeds "mil-spec" standards but also offers exceptional durability and precision. The same grade steel used in cannons is employed here, with a design that contributes significantly to its unparalleled accuracy.

Tech Specs:

  • Caliber: 5.56 x 45 mm NATO
  • Overall Length: 33.9" to 37.68"
  • Barrel Length:  16.5"
  • Weight: 8.60 lbs.
  • Magazine Capacity: 30 + 1
  • Operating System: Proprietary HK short-stroke gas piston


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