Proof Research's PR15 PXT barrel brings genuine carbon-fiber-wrapped performance to the AR-15 platform. This 18-inch .223-caliber barrel pairs a match-grade stainless core with Proof's aerospace carbon wrap, cutting front-end weight dramatically while adding stiffness that helps accuracy hold up as the barrel heats. The .750-inch gas journal accepts standard low-profile gas blocks, making installation straightforward for any competent builder. Eighteen-inch barrels are a sweet spot for precision AR builds — extra velocity for reaching out past 500 yards without the bulk of a 20-inch tube. A premium upgrade for a designated marksman or competition rifle.

In stock and ready to ship straight to your door from Dawson Defense, an Arizona-owned licensed dealer.