Product Overview

The Heckler & Koch MR762 A4 13″ SBR represents the pinnacle of HK's evolution in high-performance 7.62x51mm platforms, delivering unmatched reliability, durability, and precision for demanding operators. Built on the legendary HK417 foundation, this short-barreled rifle (SBR) combines battle-proven engineering with significant A4-series enhancements for superior performance in suppressed or unsuppressed configurations.

Key features include a short-stroke gas piston operating system that prevents hot carbon fouling from entering the action—ensuring the rifle runs harder and longer with reduced maintenance, minimal wear on internal components, and sustained accuracy even under extreme use. The adjustable gas regulator lets you fine-tune the system for optimal cycling with or without a suppressor, reducing gas blowback and enhancing shooter comfort.

The 13-inch cold hammer-forged barrel (with 5/8x24 threading) provides compact maneuverability while maintaining exceptional ballistic performance in 7.62 NATO/.308 Winchester. Fully ambidextrous controls, a slimmer profile, lighter weight, and an extended M-LOK handguard make manipulation intuitive and accessory integration seamless.

This top-tier SBR is engineered for those who demand uncompromising performance, reliability, and no-compromise HK quality—ideal for professional, tactical, or enthusiast applications where failure is not an option.

NOTE: This item is regulated by the National Firearms Act (NFA) as a short-barreled rifle. It is the buyer's responsibility to ensure full compliance with all NFA regulations, ATF requirements, and applicable federal, state, and local laws. Please consult a qualified attorney or the ATF for guidance on NFA processes, including Form 1 or Form 4 transfers, tax stamps, and registration.

Specifications (based on manufacturer data):

Caliber: 7.62 x 51mm NATO / .308 Winchester
Barrel Length: 13 inches (cold hammer-forged, threaded 5/8x24)
Overall Length: Approximately 31.4 inches
Operating System: Gas-operated short-stroke piston with adjustable regulator
Weight: Approximately 7.95–8 lbs (without magazine)
Additional: Fully ambidextrous controls, M-LOK compatible handguard, two-stage trigger

Elevate your setup with the MR762 A4 13″ SBR—where legendary HK engineering meets modern tactical excellence