Proof Research PR15 PXT Barrel 6mm ARC 20" 1:7.5 Twist Steel

The Proof Research PR15 PXT is an AR-15 platform replacement barrel chambered in 6mm ARC. Part of Proof Research's PR15 line of AR-15 barrels, the PXT configuration pairs a 20" steel barrel with a 1:7.5 twist rate selected to stabilize a broad range of 6mm ARC bullet weights for precision shooting.

Built as a replacement barrel for a standard AR-15 upper, the PR15 PXT brings the 6mm ARC's flat trajectory and reduced recoil to the AR-15 platform for hunting, target work, and general-purpose applications.