PROOF Research PR15 223 Wylde 14.5″ Carbon Fiber Barrel | 5/8-24 Threaded | 1:7 Twist

Upgrade your AR-15 build with the PROOF Research PR15 Barrel in 223 Wylde — a premium carbon fiber-wrapped barrel engineered for serious shooters who demand accuracy, durability, and reduced weight. Chambered in the versatile 223 Wylde, this barrel accepts both .223 Remington and 5.56 NATO ammunition, giving you maximum flexibility in the field or on the range.

Featuring a 14.5″ profile, a 5/8-24 threaded muzzle, and a 1:7 twist rate, this barrel is optimized for stabilizing heavier projectiles and is well-suited for tactical, competition, and hunting applications. PROOF Research barrels are renowned for their carbon fiber construction, which dramatically reduces weight without sacrificing the rigidity and heat dissipation critical to consistent, long-range performance.

Key Features:
• Chambering: 223 Wylde
• Barrel Length: 14.5″
• Muzzle Thread: 5/8-24
• Twist Rate: 1:7
• Construction: Carbon fiber wrapped
• Platform: AR-15 / PR15
• Brand: PROOF Research

Whether you’re completing a custom AR build or upgrading an existing rifle, PROOF Research sets the standard for premium barrel performance. At Deep Roots Rifle Co, we stock hard-to-find components from top-tier manufacturers like PROOF Research to support your custom build from start to finish.

Order online at deeprootsrifleco.com or visit our gun store in Eustis, Florida, where our knowledgeable staff can help you find the right components for your build. Please note: a 14.5″ barrel requires a permanently attached muzzle device to reach the federally required 16″ overall barrel length for non-NFA compliance — consult applicable federal, state, and local laws before purchasing.