The Proof Research PR10 PXT Barrel (brand part no. 152201) is a 20-inch, carbon-fiber-wrapped AR-10 barrel chambered in 6.5 Creedmoor with Proof Research’s progressive PXT rifling. Proof Research wraps a precision stainless steel core in aerospace-grade carbon fiber to cut weight without sacrificing accuracy, and the PXT Exponential Twist rifling profile is engineered for longer barrel life and tighter groups under sustained fire. A rifle-length-plus-two gas system and a 5/8-24 muzzle thread keep the barrel compatible with standard AR-10 builds and muzzle devices. Among AR10 barrels, this PR10 favors long-range 6.5 Creedmoor shooters who want a lighter barrel without giving up precision.

Key Specifications

• Chambered in 6.5 Creedmoor.
• Measures 20 inches long.
• Rifled with a 1:7.5 twist rate.
• Built with PXT Exponential Twist progressive rifling for longer barrel life.
• Constructed with a carbon-fiber-wrapped barrel.
• Runs a rifle-length-plus-two gas system with a .875-inch gas journal.
• Cut with a 5/8-24 muzzle thread.
• Weighs approximately 2 pounds 14 ounces.
• Pattern-fit for PR10/AR-10 platform rifles.

Frequently Asked Questions

What’s the twist rate on this barrel? 1:7.5, part of Proof Research’s progressive PXT rifling.

What muzzle thread does it use? A 5/8-24 thread pattern.

Why choose a carbon-fiber-wrapped barrel? It cuts significant weight over a steel barrel while holding tight accuracy tolerances.

Buy the Proof Research PR10 PXT Barrel

A lighter, longer-lasting barrel with progressive PXT rifling is exactly what this PR10 delivers for 6.5 Creedmoor AR-10 builds. Order it from our Lubbock, Texas gun shop for fast, insured shipping.