Proof Research 101261 AR-Style Barrel 308 Win 16" 1:10" Twist 5/8x24 Carbon Fiber Wrapped - Intermediate Length Gas

The Proof Research 101261 is an AR-Style barrel chambered in .308 Winchester, featuring Proof Research's signature carbon fiber wrapped construction. At 16 inches in length, this barrel is up to 64% lighter than traditional steel barrels of similar contour while offering improved heat dissipation for cooler, longer-lasting performance under sustained fire.

The bore is rifled with 5 grooves on a 1:10" twist rate, providing the versatility to stabilize a broad range of .308 Win bullet weights commonly used in sporting and tactical rifle applications. The intermediate length gas system delivers a balanced operating cycle, and the muzzle is finished with 5/8x24 threading to accommodate a wide selection of muzzle brakes, compensators, or suppressors.

Designed as a replacement barrel for AR-platform .308 Winchester rifles, the 101261 offers a lightweight carbon fiber wrapped contour for hunting, precision, and tactical rifle projects. Proof Research's carbon fiber wrap technology provides extreme temperature resistance and extended barrel life compared to conventional steel blanks, making the 101261 a sought-after upgrade for AR-style .308 builds.