This Proof Research PR15 PXT barrel is an 11.5-inch AR-15 barrel chambered in .223 Wylde, which handles both .223 Remington and 5.56 NATO. The 1:7 twist stabilizes heavier bullets. It suits a compact, precise short-barreled build. It runs both .223 Remington and 5.56 NATO.
- Brand: Proof Research
- Fits: AR-15
- Model: PR15 PXT
- Chamber: .223 Wylde
- Length: 11.5 in.
- Twist: 1:7
- Manufacturer part #: 156063
- UPC: 843068156063
