PROOF Research PR15 Carbon Fiber Barrel - 223 Wylde, 16", 5/8-24, 1:8 Twist The PROOF Research PR15 Carbon Fiber Barrel delivers an exceptional combination of precision, lightweight performance, and durability designed specifically for the AR-15 platform. Chambered in 223 Wylde, this barrel bridges the gap between .223 Remington and 5.56 NATO, offering superior accuracy with both cartridge types. The 16-inch length is ideal for a versatile rifle build, while the proprietary carbon fiber wrapping over a stainless steel core dramatically reduces weight without sacrificing rigidity or heat dissipation. The muzzle is threaded 5/8-24 for compatibility with a wide range of suppressors and muzzle devices, and the 1:8 twist rate stabilizes a broad spectrum of bullet weights from 55 to 80 grains. PROOF Research barrels are trusted by military, law enforcement, and competitive shooters who demand the very best in accuracy and reliability. Product Highlights Carbon Fiber Wrapped Construction: Proprietary carbon fiber over a stainless steel core provides exceptional stiffness-to-weight ratio, dramatically reducing overall rifle weight without compromising accuracy. 223 Wylde Chamber: Accepts both .223 Remington and 5.56 NATO ammunition while maintaining tight match-grade tolerances for superior downrange performance. 5/8-24 Threaded Muzzle: Fully threaded muzzle end ensures broad compatibility with suppressors, muzzle brakes, and flash hiders. 1:8 Twist Rate: Stabilizes a wide range of bullet weights from 55 to 80 grains, making this barrel adaptable for everything from varmint hunting to precision long-range shooting. AR-15 (PR15) Platform Compatible: Drop-in compatible with standard AR-15 upper receivers, making it an ideal upgrade for tactical, competition, or precision builds. Specs Brand: PROOF Research Model: PR15 MPN: 143254 UPC: 843068143254 Caliber/Chamber: 223 Wylde Barrel Length: 16" Thread Pitch: 5/8-24 Twist Rate: 1:8 Construction: Carbon Fiber Wrapped Stainless Steel Platform: AR-15 (PR15) 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. ]]>