HK MR762 A4 Pistol 7.62x51mm 13″

The HK MR762 A4 pistol is the 13-inch pistol variant of the commercial MR762 platform. Chambered in 7.62x51mm, the design uses a match cold-hammer-forged medium-contour barrel and a short-stroke gas piston operating system. Controls are fully ambidextrous and the upper receiver features a continuous Picatinny rail for optics. The barrel is threaded with a 5/8×24 pitch to accept common muzzle devices.

Key Specifications

• Chambered in 7.62x51mm.
• The barrel measures 13 inches.
• The overall length is 31.4 inches.
• The unloaded weight is 7.95 lb.
• Barrel thread pattern is 5/8×24.
• Action type is Semi-Auto.
• Operating system is Gas operated short stroke piston.
• Barrel twist rate is 1-in-11″ right-hand.
• Finish is Anodized black.
• Handguard style is M-LOK with integral ambidextrous QD cups.

Engineered for reliable, practical use on the range and in configurations that demand compact handling, the MR762 A4 pistol merges HK’s piston-driven architecture with a match-quality barrel and modern accessory interfaces. Its ambidextrous controls and adjustable gas system make it well suited for shooters who value durable construction and modularity for optics and accessories.