Product Description The Proof Research PR-15 Barrel in 223 Wylde is a precision-engineered rifle barrel built for AR-15 platform rifles. Featuring a 16-inch length, a 5/8-24 muzzle thread for suppressor or muzzle device compatibility, and a 1:8 twist rate optimized for stabilizing a wide range of .223 and 5.56 NATO projectiles, this barrel delivers exceptional accuracy and consistency. Crafted from premium stainless steel, the barrel showcases Proof Research&';s commitment to uncompromising quality and performance, making it an ideal upgrade for competitive shooters, precision marksmen, and dedicated AR-15 enthusiasts. The 223 Wylde chamber bridges the gap between .223 Remington and 5.56 NATO, allowing safe use of both cartridges while maximizing accuracy. Product Highlights 223 Wylde Chamber: Accepts both .223 Remington and 5.56 NATO ammunition, providing versatile and accurate performance across multiple loads. 1:8 Twist Rate: Optimized for stabilizing heavier .223/5.56 projectiles, improving long-range accuracy and consistency. 5/8-24 Muzzle Threading: Compatible with a wide range of muzzle devices, suppressors, and flash hiders for versatile rifle configurations. Premium Stainless Steel Construction: Delivers outstanding corrosion resistance, durability, and long-term performance in demanding conditions. Proof Research PR-15 Platform: Purpose-built for AR-15 style rifles, ensuring a precise fit and reliable function for professional-grade builds. Specs Brand: Proof Research Model: PR-15 Chambering: 223 Wylde Barrel Length: 16 inches Muzzle Thread: 5/8-24 Twist Rate: 1:8 Material: Stainless Steel Platform: AR-15 MPN: 143391 UPC: 843068143391 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. ]]>