The Heckler & Koch MR762 A4 is a commercial variant of HK’s MR series built around a short-stroke gas piston system. It is chambered for 7.62×51/.308 and fitted with a 16.5-inch threaded barrel, an adjustable gas regulator for suppressed or unsuppressed use, and slimline M-LOK furniture. Fully ambidextrous controls and ergonomic HK416-style furniture are incorporated for intuitive operation and durability.
Key Specifications
- The caliber is 7.62×51 NATO / .308 Win.
- The barrel measures 16.5 inches and is threaded.
- The action type is Semi-automatic.
- The operating system is a short-stroke gas piston.
- The handguard is a M-LOK slimline design.
- The stock is polymer collapsible/folding HK416 slimline furniture.
- The rifling twist rate is 1:11″.
- The muzzle thread pattern is 5/8×24.
- The unloaded weight is listed as 9.84 lbs.
- The receiver features a fully ambidextrous lower.
Built to HK standards, the MR762 A4 combines proven piston-driven reliability with modern furniture and modularity for a broad range of field and precision applications. Its features make it suitable for shooters seeking a durable, well-appointed 7.62 platform with user-adjustable gas settings and contemporary ergonomics.
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