This Proof Research barrel (part no. 144855) is a 16-inch, stainless steel .338 ARC barrel built for the PR15 (AR-15 pattern) platform with a pistol-length gas system.

Key Specifications

• Chambered in .338 ARC.
• Built in the PR15 (AR-15 pattern) platform.
• Measures 16 inches in barrel length.
• Uses a 1-in-8 twist rate.
• Runs a pistol-length gas system with a .750-inch gas journal diameter.
• Threaded 5/8-24 at the muzzle.
• Finished in stainless steel.

Frequently Asked Questions

What gas system does this barrel use? It uses a pistol-length gas system with a .750-inch gas journal diameter.

What caliber is this PR15 barrel chambered in? It is chambered in .338 ARC.

Buy the Proof Research PR15 Barrel

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