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IA Iron River Armory

H&K MR762 A4 7.62x51mm 16.5in Threaded 10rd

SKUCSSI|HZ81000830 Conditionnew CategoryAR Rifles
$4260.76
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Specs at a glance

H&K MR762 A4 7.62x51mm 16.5… SPECS AT A GLANCE 9.84 lbs WEIGHT 51mm SIZE
Editorial diagram — measurements verified during testing.

About this product

The Heckler & Koch MR762 A4 is a semi-automatic modern sporting rifle chambered for 7.62x51mm (.308 NATO). It uses a short-stroke gas piston operating system with an adjustable gas regulator for reliable function with suppressed or unsuppressed use. The rifle is built on an ambidextrous lower with a 6-position synthetic stock and slimline M-LOK handguard for modular accessory mounting. A threaded 16.5″ barrel and included 10-round magazine make it suitable for a range of precision and field applications where robust construction and serviceable design are priorities.

Key Specifications

  • The caliber is 7.62x51mm (.308 NATO).
  • The action is semi-automatic.
  • The barrel measures 16.5 inches and is threaded with a 5/8×24 pattern.
  • The operating system features a short-stroke gas piston with an adjustable gas regulator.
  • The rifle ships with one 10-round detachable magazine.
  • The handguard is a slimline M-LOK style for accessory attachment.
  • The stock is a 6-position synthetic design and the controls are ambidextrous.
  • The overall length is 39.5 inches.
  • The unloaded weight is approximately 9.84 lbs.
  • The trigger is a two-stage design.

Solidly engineered and purpose-built, the MR762 A4 combines HK’s piston-driven reliability with modern ergonomics and modularity. Its threaded 16.5″ barrel, ambidextrous controls and M-LOK interface make it a capable platform for precision work and adaptable field use while maintaining durable construction and serviceable features.

Sources & methodology. Editorial review and rating by Travis Caldwell based on hands-on testing notes and published vendor specifications. Pricing verified at time of publication.
$4260.76