PROOF Research 152249 PR15 6mm ARC 16-Inch 1:7.5 Twist PXT Barrel

The PROOF Research 152249 PR15 barrel is designed for compatible PR15-platform builds chambered in 6mm ARC. It provides a purpose-built replacement or upgrade option for shooters and builders who want to configure a modern, lightweight rifle around the efficient 6mm ARC cartridge. The barrel uses PROOF Research’s PXT designation and is identified as an Xtra Barrel, making it a practical choice for a new build, a project rifle, or a replacement setup where platform compatibility and proper chambering are essential.
The 6mm ARC chambering offers a versatile balance of ballistic performance, manageable recoil, and efficient size for a wide range of shooting applications. The 16-inch barrel length supports a compact rifle configuration while retaining the benefits of the cartridge’s modern design. Its 1:7.5 twist rate is suited to stabilizing compatible 6mm projectiles, allowing shooters to select ammunition according to their intended use and rifle setup. As with any replacement barrel, ammunition selection should match the chambering and the firearm manufacturer’s specifications.
This PROOF Research barrel is identified by part number 152249 for straightforward product selection and configuration. Before installation, confirm that the barrel is compatible with the intended PR15 receiver, bolt, gas system, handguard, and other components. Installation, headspace verification, and function checks should be completed by a qualified gunsmith or experienced professional. Follow all applicable firearm safety practices and consult the manufacturer’s documentation for installation and maintenance guidance. With its dedicated 6mm ARC chambering, compact configuration, and clearly defined PXT specification, the PROOF Research 152249 offers a focused option for compatible PR15 builds.

Features:

• Brand: PROOF Research

• Part Number: 152249

• Platform: PR15-compatible barrel

• Chambering: 6mm ARC

• Barrel Length: 16 inches

• Twist Rate: 1:7.5

• Configuration: PXT Xtra Barrel