The Proof Research PR10 PXT is a carbon fiber wrapped rifle barrel chambered in .308 Winchester for PR10 (AR-10 pattern) builds. This 18-inch version has a 1:10 twist. Carbon fiber barrels save weight compared with an all-steel barrel of similar stiffness, which is why they are popular on lightweight precision and hunting rifles.
- Brand: Proof Research
- Line: PR10 PXT
- Caliber: .308 Winchester
- Length: 18 in.
- Twist: 1:10
- Construction: Carbon fiber
- Manufacturer part number: 156094
