HK 81001050 MR556 A4 5.56x45mm 30+1 11" Black Threaded Barrel, M-LOK Handguard, Black Picatinny Rail Receiver, Black Synthetic 6 Position Buffer, Black Polymer Grip, Ambidextrous

Experience world-class reliability with the HK MR556 A4 Pistol — the latest evolution of Heckler & Koch's legendary short-stroke gas piston platform. Built on a proven design trusted by professionals, this 5.56 NATO pistol delivers exceptional accuracy and durability without compromise. Its cold hammer-forged barrel, adjustable gas regulator, and fully ambidextrous controls give you precision performance whether you're running suppressed or unsuppressed. The M-LOK handguard, Picatinny rail receiver, and threaded barrel make customization seamless, while the gas piston system keeps your action cleaner and running longer than traditional direct-impingement designs. An 11" barrel paired with an 11" handguard creates an agile, maneuverable platform perfect for tactical applications, home defense, or competitive shooting. For shooters who demand uncompromising performance and reliability, the MR556 A4 sets the standard.