Heckler & Koch MR556A1 Rifle .223/5.56 - 16.5" - Matte

Manufactured by Heckler & Koch
SKU: 81000580
MPN: 81000580
Manufactured by Heckler & Koch
(0) No Reviews yet

Out of Stock

For individual Officer, First Responder, and Military pricing please make sure you are logged in. for details

Items that are regulated by the ATF have restrictions and requirements: 
•Your entire order will ship only to a Federal-Firearm License holder.
•Please contact your local FFL prior to placing your order to ensure they are still accepting transfers.
•A copy of your order/invoice as well as the current FFL license for your local dealer must be emailed to ffl@primaryarms.com.



The Heckler & Koch MR556A1 Rifle, chambered in .223/5.56, is engineered for peak performance and enduring reliability. This model features a 16.5-inch barrel with a durable matte finish that effectively reduces glare and enhances durability.

  • Caliber: .223/5.56
  • Barrel Length: 16.5 inches
  • Finish: Durable matte
  • Operating System: Gas piston
  • Magazine Capacity: 30 rounds
  • Adjustable Collapsible Stock
  • Picatinny Rail System

Built by the esteemed German manufacturer Heckler & Koch, the MR556A1 utilizes a gas piston operating system. This system promotes a cleaner, cooler operational state by minimizing fouling, thereby enhancing the rifle's durability and performance longevity.

The 16.5-inch barrel of the MR556A1 strikes a balance in maintaining accuracy. The matte finish on the barrel provides a non-reflective surface, which is ideal for a variety of environments. This rifle is designed to perform consistently well, whether used in competitive environments or recreational activities.

The versatility of the .223/5.56 chambering allows for the use of a broad range of ammunition, making it suitable for various applications. The inclusion of a 30-round magazine provides extended use between reloads, enhancing convenience for the user.

With user comfort in mind, the MR556A1 features an adjustable collapsible stock that can be modified to suit individual preferences for length of pull. The integrated Picatinny rail offers the flexibility to attach various accessories, such as optics and lights, which can tailor the rifle to specific needs and preferences.

In conclusion, the Heckler & Koch MR556A1 Rifle is a high-quality firearm that combines advanced engineering, reliable performance, and thoughtful design. It stands out as a superior choice for anyone looking for a rifle that offers both precision and adaptability.

See More


Barrel Coating
Barrel Length16.5
BrandHeckler & Koch
Caliber Gauge5.56 NATO
Magazine Capacity10
Twist Rate1:7
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.

Ratings & Reviews

No reviews available

Be the first to Write a Review