PROOF Research PR15 6mm ARC 18-Inch 7.5 Twist PXT Barrel, Part Number 152256

The PROOF Research PR15 6mm ARC PXT barrel is designed for builders and shooters seeking a dedicated replacement or extra barrel for compatible PR15 platforms. Part Number 152256 features an 18-inch barrel length and a 7.5 twist rate, providing a configuration suited to the 6mm ARC cartridge and a broad range of modern rifle applications. Its extra-barrel format makes it a practical choice for maintaining a ready replacement or configuring an additional upper assembly.
The PXT designation identifies this barrel configuration within the PROOF Research product line. The 6mm ARC chambering offers a versatile option for precision-oriented shooting, training, hunting, and recreational use when matched with the appropriate firearm components and ammunition. The 7.5 twist rate is intended to support proper bullet stabilization across compatible projectile weights, while the 18-inch profile balances useful ballistic performance with a manageable overall rifle setup.
PROOF Research is recognized for producing precision-focused rifle components for demanding users. This barrel is intended for installation by a qualified gunsmith or experienced professional familiar with barrel fitting, headspace verification, and platform compatibility. Confirm that the PR15 configuration, chambering, gas system, bolt, and other components are suitable for your build before installation. Always follow safe firearm-handling practices, use ammunition specifically marked for 6mm ARC, and verify function and accuracy after assembly. The PROOF Research PR15 6mm ARC barrel provides a purpose-built option for replacing a worn barrel, keeping a spare available, or creating a dedicated 6mm ARC configuration.

Features:

• Brand: PROOF Research

• Part Number: 152256

• Platform: PR15

• Chambering: 6mm ARC

• Barrel Length: 18 inches

• Twist Rate: 1:7.5

• Configuration: PXT extra barrel