Green Mountain 5.56 AR-15 Barrel 16" M4 Fluted Phosphate

Upgrade your AR-15 build with the Green Mountain 5.56 AR-15 Barrel 16" M4 Fluted Phosphate. This precision-engineered barrel delivers reliable performance for tactical, competition, or recreational shooting. Crafted from high-quality 41V50 steel with a chrome-lined bore and chamber, it ensures exceptional durability and easy maintenance even under demanding conditions.Key Features Straight fluted profile reduces overall weight while improving heat dissipation for sustained firing sessions Phosphate finish provides superior corrosion resistance and a low-glare tactical appearance Chrome-lined bore and chamber extends barrel life and simplifies cleaning Carbine-length gas system with 0.75" gas block journal ensures smooth, reliable cycling with standard AR-15 components 1:9 twist rate stabilizes a wide range of 5.56 NATO and .223 Remington ammunition for consistent accuracy 1/2x28 muzzle threads accommodate popular muzzle devices and suppressorsTechnical Specifications Barrel Length: 16 inches Platform: AR-15 / M4 compatible Cartridge: 5.56 NATO Twist Rate: 1:9 Gas System: Carbine Gas Block Journal: 0.75 inches Muzzle Thread: 1/2x28 Finish: Phosphate exterior with chrome-lined bore and chamber Profile: Straight fluted M4 Weight: 29.6 ouncesWhy Choose This BarrelThe fluted design strikes an ideal balance between reduced weight and structural integrity, making it perfect for lightweight builds without sacrificing rigidity. Chrome lining protects against wear from high-volume shooting, while the phosphate coating resists rust in varied environments. This barrel solves common pain points like excessive heat buildup and added bulk, delivering a responsive, accurate platform for your next AR-15 project.Whether you're assembling a home-defense rifle or optimizing a range setup, this Green Mountain barrel provides the precision and reliability serious shooters demand.