Proof Research PR10 308 Win 18" 1:10 Twist Stainless AR-10 Barrel - 5/8x24 Threaded

The Proof Research PR10 is a stainless steel replacement barrel designed for the AR-10 platform. Cut from 416R stainless steel, this 18" barrel is chambered in .308 Winchester and rifled at a 1:10 twist rate to stabilize a broad range of bullet weights from lighter projectiles through heavier match and hunting loads.

The PR10 is configured for a rifle-length gas system with a .750" gas journal, making it a straightforward fit for standard AR-10 builds. The muzzle is threaded 5/8x24 for compatibility with the wide range of common .308 Win muzzle brakes, flash hiders, and suppressors on the market.

Shipping as a bare barrel ready to be headspaced and fitted to your AR-10 pattern build, the PR10 weighs approximately 3 lbs 1 oz, giving builders a balanced combination of manageable front-end weight and accuracy potential for both general-purpose and precision applications.