The Proof Research PR15 .338 ARC 10" Stainless AR Barrel, Pistol-Length Gas, .750 Gas Journal, 5/8-24 Threaded, Stainless is a compact, precision-focused AR-15 barrel built for shooters who want a short, maneuverable upper without sacrificing consistency. This stainless steel barrel measures 10 inches and features a threaded 5/8-24 muzzle, a pistol-length gas system, and a .750-inch gas block journal, delivering smooth cycling and reliable performance in a clean, no-flutes profile.

Chambered in .338 ARC with a 1-in-8 twist rate, this PR15 barrel is designed to stabilize modern high-BC projectiles for accurate range work, suppressed builds, or tight-space hunting setups where overall length matters. Its stainless construction offers durability and corrosion resistance, making it a solid choice for frequent training and regular use. Backed by Proof Research’s reputation for accuracy and refined barrel craftsmanship, it provides a dependable foundation for a high-performance AR-15 upper.

• Manufacturer: Proof Research
• Model: PR15 .338 ARC 10" Stainless AR Barrel
• Caliber: .338 ARC
• Barrel Length: 10 inches
• Barrel Twist Rate: 1-in-8
• Gas System Length: Pistol Length
• Gas Block Journal Size-Diameter: .750 inch