16" 5.56 NATO 1:9 Twist Phosphate + Chrome-Lined Carbine M4 Barrel

16" 5.56 NATO 1:9 Twist Phosphate + Chrome-Lined Carbine M4 BarrelChrome-Lined Durability Meets Combat-Proven M4 Performance.The 16" 5.56 NATO 1:9 Twist Phosphate + Chrome-Lined Carbine M4 Barrel is a battle-ready upgrade designed for shooters who want military-grade reliability without the premium price. This BRD-branded barrel features a tough phosphate exterior with a chrome-lined bore for extended barrel life and corrosion resistance. It is ideal for high-volume shooting and hard-use environments. Its M4 profile provides a proven balance between weight and heat management, while the 1:9 twist rate supports a wide range of 5.56 NATO bullet weights. With a carbine-length gas system and a 0.75 gas block journal, this barrel is compatible with various AR-15 platforms. Backed by our MOA accuracy guarantee and made in the USA under ISO-9001 quality standards, it's the wise choice for builders who demand value and performance.