This Proof Research PR15 PXT is a 20-inch stainless steel AR-15 barrel chambered in 6mm ARC. It has a 1:7.5 twist for long 6mm bullets and a .750 gas block journal. The 20-inch length gets strong velocity from the 6 ARC cartridge for longer-range work.
- Brand: Proof Research
- Fits: AR-15
- Model: PR15 PXT
- Chamber: 6mm ARC
- Length: 20 in.
- Twist: 1:7.5
- Construction: stainless steel
- Gas block diameter: .750 in.
- Manufacturer part #: 152263
- UPC: 843068152263
