The Proof Research PR15 PXT is a carbon fiber-wrapped barrel for AR-15 rifles chambered in 6mm ARC. Carbon fiber cuts weight compared with a steel barrel of similar stiffness, which helps a precision AR stay light. This 20-inch barrel has a 1:7.5 twist and a .750 gas block journal.
- Brand: Proof Research
- Fits: AR-15
- Model: PR15 PXT
- Caliber: 6mm ARC
- Length: 20 in.
- Twist: 1:7.5
- Construction: carbon fiber
- Gas block diameter: .750 in.
- Manufacturer part #: 152195
- UPC: 843068152195
