Product Description Proof Research PR15 .300 Blackout PXT AR-15 Barrel - Pistol Length - Carbon Fiber - 12.5" Proof Research PR15 .300 Blackout PXT AR-15 Barrel - Pistol Length - Carbon Fiber - 12.5" at Primary Arms Browse all Primary Arms deals $969.00 Out of Stock Price verified 3d ago Buy Now at Primary Arms Secure checkout Easy returns or compare prices Amazon eBay Product Details Brand Proof Research Proof Research