HK MR556 A4 5.56x45mm 11" Patriot Brown 30+1 81001201

MR556 A4

The HK MR556 A4 is a high-end 5.56x45mm tactical pistol designed to military specifications, offering exceptional reliability and performance in a compact form. It features a short-stroke gas piston operating system for cleaner and cooler operation, an 11-inch threaded barrel with a 1:7 twist for superior accuracy, and a 30+1 capacity for ample firepower. With its Patriot Brown receiver finish and ambidextrous controls, this pistol combines elite engineering with user-friendly design for demanding applications.

Delving deeper, the cold hammer-forged barrel ensures longevity and precision, while the M-LOK handguard allows for easy attachment of accessories without added weight. The ambidextrous safety lever and charging handle enhance versatility for all shooters, and the 6-position adjustable synthetic stock provides a customizable fit for improved stability. The full-length Picatinny rail on the receiver supports a wide range of optics and attachments, complemented by a smooth 4.5–5.6 lb trigger pull for enhanced control during rapid fire.

This pistol is ideally suited for tactical scenarios, home defense, and competitive shooting where reliability under stress is crucial. Its gas piston system minimizes fouling, making it perfect for extended range sessions or harsh environments, while the threaded barrel supports suppressors for discreet operation. Enthusiasts and professionals alike will appreciate its battlefield-proven durability and adaptability in dynamic situations.

Specifications