The Proof Research PR15 PXT is a barrel for the AR-15 chambered in .223 Wylde, which safely fires both .223 Remington and 5.56 NATO. This 14.5-inch version has a 1:7 twist, which stabilizes heavier bullets. It is a short, handy barrel for a precision carbine.
- Brand: Proof Research
- Fits: AR-15
- Model: PR15 PXT
- Chamber: .223 Wylde
- Length: 14.5 in.
- Twist: 1:7
- Manufacturer part #: 156070
- UPC: 843068156070
