HK MR762 A4 Pistol 7.62×51 13″ Threaded 20rd

The Heckler & Koch MR762 A4 is a semi-automatic 7.62x51 pistol configured with a 13-inch threaded barrel and M-LOK handguard. It features ambidextrous controls, a match rifle cold-hammer-forged barrel, and includes one 20-round polymer magazine. The design accommodates suppressor-ready setups while retaining an HK operating system and two-stage trigger characteristics.

Key Specifications

• The caliber is 7.62x51 (.308 / 7.62 NATO).
• The action is Semi-Auto.
• The barrel measures 13 inches and is threaded with a 5/8x24 pitch for accessory mounting.
• The magazine capacity is 20 rounds and 1 magazine is included.
• The barrel twist rate is 1-in-11" with 4 lands and grooves and right-hand twist.
• The operating system is a gas operated short stroke piston.
• The handguard uses a M-LOK interface with integral ambidextrous QD cups and a continuous Picatinny rail.
• The receiver and controls provide a fully ambidextrous lower with ambidextrous safety, bolt release and magazine release.
• The empty weight is listed as 7.95 lb (127.2 oz).

Built to HK-USA specifications for the MR762 A4 platform, this pistol configuration blends a match-grade barrel and robust ambidextrous controls with modular accessory interfaces. Its threaded 13" barrel and M-LOK handguard make it suitable for suppressed and accessory-equipped applications while retaining HK's short-stroke piston operation and two-stage trigger characteristics.