H&K MR762 A4 | 7.62×51 | 16.5in | 81000829

The Heckler & Koch MR762 A4 is a commercial modern sporting rifle built around HK’s short-stroke gas piston system and semi-automatic operation. Chambered for .308 / 7.62 NATO with a 16.5-inch threaded barrel, the A4 features slimline M-LOK furniture, a synthetic collapsible stock and fully ambidextrous controls for adaptable handling in the field. For an optic under $1,000 that complements the MR762 A4 for mid-range work, consider a 1-6x variable combat/field scope such as the Vortex Strike Eagle 1-6×24 for its fast engagement capability and durability.

Typical applications for this rifle include precision mid-range shooting and big-game hunting where a robust piston system and an adjustable gas regulator reduce maintenance and improve reliability with a range of suppressor and ammunition options.

Product Specifications

• The UPC is 642230269453.
• The manufacturer is Heckler & Koch / H&K.
• The model is MR762 A4.
• The manufacturer part number is 81000829.
• The caliber is .308 / 7.62 NATO.
• The barrel measures 16.5 inches.
• The action is Semi-Automatic.
• The barrel type is Threaded.
• The stock material is synthetic polymer.
• The stock color is black.
• The handguard is a slimline M-LOK design.
• The rifle uses a short-stroke gas piston and includes an adjustable gas regulator.
• The receiver has a fully ambidextrous lower.
• The barrel twist rate is 1:11″.
• Includes one detachable magazine.

The MR762 A4 emphasizes reduced maintenance and component longevity through HK’s piston architecture while retaining AR-style ergonomics and accessory compatibility via its full-length top rail and M-LOK handguard. Its threaded barrel and adjustable gas system make it adaptable to suppressed or unsuppressed use, and the ambidextrous controls plus slimline furniture keep handling intuitive across conditions. This configuration is aimed at shooters who want a durable, serviceable platform for accurate mid-range work and field use.

Owners and reviewers commonly praise the MR762 A4 for its reliability and durable construction, and many note that the piston system noticeably reduces carbon fouling compared with direct-impingement designs.