Proof Research PR15 223 Wylde 16" 1:8 Twist Stainless AR-15 Barrel - 5/8x24

The Proof Research PR15 is a precision-engineered drop-in AR-15 barrel chambered in .223 Wylde. Cut from 416R stainless steel, the 16-inch barrel is built to match-grade standards for shooters and builders who demand tight concentricity, uniform bore dimensions, and repeatable accuracy across a broad range of bullet weights.

The .223 Wylde chamber safely fires both .223 Remington and 5.56 NATO ammunition, giving shooters maximum versatility from a single barrel. A 1:8 twist rate stabilizes everything from light varmint projectiles up through heavier match and tactical loads, while an intermediate-length gas system with a .750-inch gas journal and .093 port ensures reliable cycling with a wide variety of ammunition and sound suppressors.

The muzzle is threaded 5/8x24 to accept a broad selection of muzzle devices and sound suppressors. Weighing in at approximately 2 lbs 10 oz, the PR15 is a balanced, do-it-all choice for hunting, defensive, and recreational AR-15 builds, backed by the proven reputation of Proof Research for quality stainless steel and carbon fiber barrels.