HK MR556 5.56mm NATO 16.5in Black Semi-Automatic Modern Sporting Rifle – 10+1 Rounds

The HK MR556 5.56mm NATO rifle is a top-tier modern sporting rifle, offering civilian shooters the legendary reliability and performance of the Heckler & Koch MR556A1 platform. Directly descended from the acclaimed HK416, this semi-automatic 16.5-inch rifle combines tactical precision, ergonomic design, and proven HK craftsmanship for unmatched shooting performance. Ideal for home defense, tactical training, recreational shooting, and competitive marksmanship.

Unmatched HK Reliability and Design

The MR556A1 employs HK’s proprietary gas piston operating system, using a piston and solid operating “pusher” rod to virtually eliminate malfunctions commonly found in direct impingement systems. By keeping hot carbon fouling and waste gases out of the receiver, this design reduces wear and tear while ensuring consistent, reliable performance. With a fully free-floating HK Modular Rail System (MRS), this rifle provides maximum accuracy for every shot, whether using iron sights, optics, or red-dot setups.

Precision Features for Civilian Shooters

• 16.5-inch cold hammer-forged barrel for superior accuracy and durability
• One 10-round magazine included for low-capacity compliance
• 9-inch MRS handguard with ergonomic design and modular Picatinny rail segments
• Top-mounted Picatinny rail for optics, scopes, and red-dot sights
• Flip-up front and rear Troy Microsights for fast, reliable aiming
• Black polymer pistol grip for comfortable handling and control
• Compatible with major AR-style subassemblies and accessories

Specifications

Why Choose the HK MR556 5.56mm NATO?

The HK MR556 16.5-inch semi-automatic rifle is perfect for shooters seeking tactical precision, reliability, and high-quality craftsmanship. Whether for home defense, range training, or tactical drills, this HK rifle offers unmatched performance and modularity. Its combination of HK piston system, cold hammer-forged barrel, ergonomic MRS handguard, and compatibility with AR-style components ensures every shot is accurate and controlled.

Upgrade your collection today with the HK MR556 5.56mm NATO rifle and experience the legendary reliability, accuracy, and versatility that only Heckler & Koch can provide.