Rock River Arms MR762 A4 7.62x51 16.5" Rifle

Rock River Arms MR762 A4: Serious NATO Firepower

The Rock River Arms MR762 A4 represents a thoughtful evolution of the AR-pattern rifle, scaled up to handle the full power of 7.62x51 NATO ammunition. This is not a casual plinker—it's a rifle built for shooters who demand accuracy and reliability at distance.

Key Features

• Caliber: 7.62x51 NATO—a proven, powerful cartridge with excellent ballistics and real-world stopping power
• Barrel: 16.5" chrome-moly steel, optimized for the NATO round's performance envelope
• Capacity: 10+1 rounds—compliant where required, practical for hunting and sport shooting
• Furniture: Gray finish throughout, providing a modern appearance and excellent corrosion resistance
• Platform: AR-pattern design you already understand, scaled appropriately for a larger cartridge

Why This Rifle Matters

The 7.62x51 NATO cartridge sits at the sweet spot between the common 5.56 and larger magnum rounds. It delivers genuine power for hunting medium to large game, while remaining controllable and practical for extended shooting sessions. Rock River Arms has engineered this rifle to handle that power reliably, with proper gas system tuning and component selection.

The 16.5" barrel provides a good balance of velocity and handling characteristics. You'll get the ballistic performance you need without an unwieldy overall length.

Built to Last

Rock River Arms maintains exacting quality standards. This rifle is assembled by craftsmen who understand what shooters need: reliability first, then accuracy, then everything else.