The Heckler & Koch MR762 A4 is a semi-automatic .308 Win rifle built around a short-stroke gas piston operating system. Its adjustable gas regulator allows the rifle to be tuned for suppressed or unsuppressed use, while reducing carbon fouling and heat transfer into the action compared with direct-impingement designs. The 16.5-inch barrel, M-LOK free-float handguard, ambidextrous controls, HK USA enhanced grip, and HK416-style nine-position stock provide a practical and adaptable configuration for demanding range and field applications.

Key features

• Short-stroke gas piston system helps reduce fouling and maintenance demands
• Adjustable gas regulator supports suppressed and unsuppressed operation
• 16.5-inch threaded barrel balances maneuverability with cartridge performance
• M-LOK free-float handguard provides flexible accessory mounting
• Fully ambidextrous controls improve handling from either shoulder
• HK416-style nine-position stock allows length-of-pull adjustment

The MR762 A4 combines HK piston-driven reliability with a compact, adaptable .308 Win rifle configuration.