H&K MR762 A4 | 7.62x51mm | 16.5 in | 10+1 | 81001206

The HK MR762 A4 is a semi-automatic 7.62x51mm rifle built around Heckler & Koch’s short-stroke gas piston system, designed to limit carbon fouling and reduce wear on internal parts. An adjustable gas regulator supports both suppressed and unsuppressed operation, while fully ambidextrous controls, a slimmer profile and a lighter overall weight improve handling and manipulation in the field. This configuration includes a 16.50 inch threaded barrel, Patriot Brown Picatinny rail receiver and an M-LOK handguard.

For optics, a rugged, low-magnification variable like the Vortex Viper PST Gen II 1-6×24 pairs well with this platform for engaging targets out to intermediate ranges while preserving fast target acquisition; it sits comfortably under a $1000 budget for most buyers.

Suggested applications: medium- to long-range precision practice and duty/training use where a robust, low-maintenance operating system and ambidextrous controls are priorities.

Product Specifications

• The manufacturer is listed as Heckler & Koch / H&K.
• The model/part number is 81001206.
• The caliber is 7.62x51mm.
• The action is Semi-Auto.
• The barrel measures 16.50 inches and is threaded.
• The rifle uses a short-stroke gas piston operating system with an adjustable gas regulator.
• The capacity is 10 + 1.
• The trigger type is a Two Stage trigger.
• The rate of twist is 1:11″.
• The overall length is 39.50 inches.
• The stock is a 6 Position Black synthetic design.
• The receiver includes a Patriot Brown Picatinny rail and the handguard is M-LOK compatible.
• Controls and hand orientation are Ambidextrous.
• The finish style is Blued/Black.
• The UPC is 642230271104.

HK engineered the MR762 A4 to be a durable, user-friendly 7.62x51mm platform that lowers routine maintenance needs through its piston system and adjustable gas settings. The combination of a threaded 16.50 inch barrel, M-LOK handguard and full-length Picatinny rail provides a versatile mounting baseline for optics and accessories, while the ambidextrous controls and multi-position stock keep the rifle adaptable to different operators and mission sets.