HK MR556 A4 5.56 Rifle

The HK MR556 A4 is a premium 5.56x45mm semi-automatic rifle that combines German engineering excellence with modern tactical features. This model (81001204) features a 16.50-inch threaded barrel, a Patriot Brown Picatinny rail receiver, an M-LOK handguard, and ambidextrous controls with a 10+1 round capacity.

HK MR556 A4 5.56 Rifle

The HK MR556 A4 is a high-performance 5.56 NATO rifle built to the exacting standards of Heckler & Koch. Equipped with a 16.50-inch black threaded barrel, this rifle delivers excellent accuracy and allows for easy suppressor or muzzle device attachment. The Patriot Brown Picatinny rail receiver provides a durable and corrosion-resistant finish along with ample mounting space for optics and accessories. The M-LOK handguard offers a lightweight and modular platform for attaching lights, grips, and other accessories. A 6-position adjustable black synthetic stock provides customizable length of pull for improved comfort and control. Ambidextrous controls enhance usability for both right and left-handed shooters. With a 10+1 round capacity, the MR556 A4 is designed for tactical applications, competition shooting, and serious enthusiasts who demand reliability and precision, especially in regions with magazine capacity restrictions.

Key Features of the HK MR556 A4

• Brand: Heckler & Koch (HK)
• Model: MR556 A4
• Caliber: 5.56x45mm NATO
• Barrel Length: 16.50 Inches (Threaded)
• Capacity: 10+1 Rounds
• Receiver: Patriot Brown Picatinny Rail
• Handguard: M-LOK
• Stock: 6-Position Black Synthetic
• Controls: Ambidextrous
• Item Number: 81001204

Ideal For

Perfect for tactical operators, competitive shooters, and enthusiasts in restricted states looking for a premium, reliable 5.56 NATO rifle with modern features and ambidextrous controls.

Why Choose the HK MR556 A4?

The HK MR556 A4 delivers the legendary reliability and precision of Heckler & Koch in a modern, feature-rich platform. With its threaded barrel, M-LOK handguard, Patriot Brown receiver, ambidextrous controls, and 10-round capacity, this rifle is built for performance and compliance.

HK MR556 A4. HK MR556. MR556 A4. Heckler & Koch MR556. 5.56 NATO Rifle. HK 5.56 Rifle. Patriot Brown MR556. M-LOK Handguard Rifle. Ambidextrous AR-15. 81001204. HK MR556 A4 5.56. 10 Round 5.56 Rifle.The End ```