The Proof Research PR10 PXT is a carbon fiber barrel for AR-10 builds, chambered in .308 WIN with a 20.00" length. Proof's carbon fiber construction gives a high stiffness-to-weight ratio, taking weight off the front of the rifle so it balances better and stays easier to carry and hold steady.

PXT is Proof's Exponential Twist rifling, a rework of conventional rifling geometry and twist progression that lowers engraving force, reduces throat erosion and eases the bullet's entry into the rifling. At 20.00" with a rifle-length gas system, this barrel suits a full-size AR-10 built for precision and long-range work, where the extra length gets the most velocity from .308 WIN.

• Brand: Proof Research
• Model: PR10 PXT
• Platform: AR-10
• Caliber: .308 WIN
• Barrel Length: 20.00"
• Gas System: Rifle Length
• Construction: Carbon Fiber, PXT Rifling