Product Description The Rosco Manufacturing Purebred barrel is a precision-crafted rifle barrel engineered for AR-platform builds demanding accuracy, durability, and versatility. Chambered in 223 Wylde, this 13.90" barrel accepts both .223 Remington and 5.56 NATO ammunition, giving shooters exceptional flexibility. Constructed from premium stainless steel and treated with a hard-wearing Nickel Boron finish, it offers outstanding corrosion resistance and an easy-to-clean surface. The SPR (Special Purpose Rifle) profile delivers an ideal balance of weight and heat dissipation, while the 1:7" twist rate ensures optimal stabilization of heavier projectiles. The 1/2"x28 threaded muzzle makes this barrel compatible with a wide selection of suppressors and muzzle devices, rounding out a barrel built for serious shooting applications. Product Highlights 223 Wylde Chamber: Accepts both .223 Remington and 5.56 NATO ammunition for versatile use across a wide range of loads. Nickel Boron Finish: Provides superior corrosion resistance, reduced friction, and simplified maintenance for long-term reliability. 1:7" Twist Rate: Optimized for stabilizing heavier 5.56/.223 projectiles, improving downrange accuracy and consistency. 1/2"x28 Threaded Muzzle: Standard thread pattern ensures compatibility with a broad range of suppressors, compensators, and muzzle brakes. Stainless Steel Construction with SPR Profile: Balances durability, heat management, and weight for demanding tactical and competition shooting environments. Specs Brand: Rosco Manufacturing Model: Purebred MPN: PB-139-SPR-223W-7-M UPC: 850039693427 Caliber: 223 Wylde Barrel Length: 13.90" Material: Stainless Steel Finish: Nickel Boron Twist Rate: 1:7" Thread Pattern: 1/2"x28 Weight: 29.80 oz Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer. ]]>