Heckler & Koch MR762 A4 7.62x51mm 16.50″ 10+1

About this product

The Heckler & Koch MR762 A4 is a 7.62x51mm semi-automatic rifle built around H&K’s short-stroke gas piston system for reduced carbon fouling and longer service intervals. An adjustable gas regulator permits tuning for suppressed or unsuppressed operation. The A4 features fully ambidextrous controls, a slimmer profile, and lighter handling characteristics compared with previous MR762 configurations. Its configuration suits precision-oriented and duty-style applications that require robust operation and consistent performance.

Key Specifications

• The action is Semi-Auto.
• The caliber is 7.62x51mm.
• The magazine capacity is 10 + 1.
• The barrel measures 16.50″ and features a threaded profile.
• The receiver includes a Patriot Brown Picatinny rail.
• The handguard uses an M-LOK interface.
• The overall length is 39.50″.
• The unloaded weight is 9.84 lbs.
• The stock is a 6 Position black synthetic design.
• The trigger is a Two Stage trigger with a 1:11″ rate of twist.

With a proven piston-driven operating system, an adjustable gas regulator, and ambidextrous controls, the MR762 A4 balances durability and usability for long-range precision and duty-style roles. Its threaded 16.50″ barrel and M-LOK handguard provide a flexible platform for optics and accessories while the 6-position stock and ergonomic controls support repeatable handling. This configuration is aimed at shooters who prioritize reliability, modularity, and predictable performance in a full-size 7.62x51mm package.