Rare Breed Triggers FRT – 15

Rare Breed Triggers FRT – 15
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HK MR556 A1 5.56/.223

HK MR556 A1 5.56/.223, 16.5″ Medium Contour Barrel, M-LOK, Black, 30rd HK- Heckler and Koch

Original price was: $3,499.00.Current price is: $2,799.20.

Sale!
The MR556A1 is a direct descendant of the world-famous HK416. It offers the civilian semi-automatic shooter battlefield-proven reliability, durability and precision you would expect from Heckler & Koch.

This latest update to the MR556A1 includes an updated grip and forearm as well as a lighter barrel profile that removes nearly a pound of front-end weight from the rifle.

The MR556A1 is assembled in the USA using US- and German-made components and uses many of the same parts and assemblies developed for the HK416.

Like the HK416, the MR556A1 uses a proprietary HK short- stroke gas piston in place of the direct-gas-impingement system found on lesser AR15-style rifles that propels exhaust gas into the upper receiver to operate the action. In the “closed” HK piston system, exhaust gasses never enter the receiver, which means the HK runs cooler, cleaner. That is where that legendary HK reliability comes from.

When adverse conditions, like dust, sand and mud are introduced, the advantage of the HK system becomes even more drastic. That is why so many of the world’s military and law-enforcement elite customers trust HK.

The MR556A1’s barrel is cold hammer forged from the highest quality cannon-grade steel, with a slightly smaller diameter at the muzzle for improved accuracy and velocity. While the material and cold hammer forging process themselves greatly enhance durability, HK’s processes include many additional steps not taken by other manufacturers to produce superior accuracy and service life, ensuring performance well beyond “mil-spec.”

  • Brand : HK
  • Category : Tactical Rifles
  • Caliber : 5.56x45mm NATO
  • Model : MR556
  • Series : A1
  • Stock Finish : Black
  • Action : Semi-Auto
  • Barrel Length Range : 16″ to 16.99″
  • Sights : None, Optic Ready
  • Capacity : 30+1
  • Magazine Type : OEM
  • Grips : Black Polymer
  • Hand : Right
  • Handguards : M-LOK
  • OAL : 33.90″-37.68″
  • Receiver Finish : Black
  • Receiver Material : Aluminum
  • Stock Description : Adjustable
  • Stock Finish Group : Black
  • Stock Material : Synthetic
  • Weight : 8.60 lbs
  • Barrel Description : Medium Contour

Buy Firearms Online – Reliable & Affordable

This HK MR556 A1 5.56/.223, 16.5″ Medium Contour Barrel, M-LOK, Black, 30rd HK- Heckler and Koch is ideal for shooters looking to buy guns online with confidence. Built with precision engineering and tested performance, it’s a top-tier choice whether you're looking for home defense, sport shooting, or a trusted everyday carry.

Why Choose the HK MR556 A1 5.56/.223, 16.5″ Medium Contour Barrel, M-LOK, Black, 30rd HK- Heckler and Koch?

  • ✅ Quality guaranteed by top firearm manufacturers
  • ✅ Ships fast across the USA
  • ✅ Legal compliance and background-check ready

Buy Firearms Near Me – Nationwide Delivery

No matter your location, we ship to all 50 states. Looking for where to buy Guns near you? FRT-15.com brings the best selection to your door, legally and securely.

Shipping & Return Policy

  • 📦 Fast shipping within 1–3 business days
  • 🔁 30-day return policy for unused, unmodified items
  • 💬 Questions? Contact our support team

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Classification

Firearm
Manufacturer Number

81000579
Brand

HK- Heckler and Koch
interest

AR-15 Rifles
SKU: 642230262553 Category: Tag:

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