CMC Triggers 556 NATO SevenPointFive Inch Button Rifled AR Barrel OneToSeven Twist

The CMC Triggers BBL556001 5.56 NATO 7.50" Chrome Moly Vanadium Steel Button Rifled barrel delivers a compact, high-performance option for AR-style platforms, combining a rugged chrome moly vanadium composition with precision button rifling to optimize stability and accuracy. Crafted with a 7.50-inch overall length and a 1:7 inch twist, this barrel is designed to stabilize a wide range of common 5.56 rounds, making it a versatile choice for compact builds, SBR configurations, or dedicated short-length rifles where reliable performance in a tighter profile is essential. The button rifling process enhances smooth bore performance and consistent projectile engagement, contributing to improved shot-to-shot consistency and extended barrel life under spirited field use. Whether upgrading a factory barrel for enhanced accuracy or building a purpose-driven compact rifle, this barrel provides a durable foundation capable of delivering dependable chamber pressure management and muzzle energy retention. Its rugged steel construction and precise manufacturing tolerances support rigorous field conditions, while the 7.50" length maintains a balanced, maneuverable profile for rapid target acquisition and controlled follow-up shots in dynamic shooting scenarios.