Green Mountain 5.56 AR-15 Barrel 16" M4 Phosphate

Upgrade your AR-15 build with the Green Mountain 5.56 AR-15 Barrel 16" M4 Phosphate, a precision-engineered component designed for reliability and accuracy in tactical and recreational shooting. This carbine-length barrel delivers consistent performance thanks to its robust construction and thoughtful features tailored for 5.56 NATO platforms. Key Features Chrome-lined bore and chamber for enhanced durability and easy cleaning, resisting wear from high-volume shooting M4 profile with carbine gas system for balanced weight distribution and reliable cycling 1:7 twist rate optimized for stabilizing a wide range of bullet weights, including heavier 62-77 grain projectiles Phosphate finish provides excellent corrosion resistance while maintaining a low-profile appearance 0.75" gas block journal and 1/2x28 muzzle threads for broad compatibility with standard accessories Specifications Barrel Length: 16 inches Platform: AR-15 Cartridge: 5.56 NATO Twist Rate: 1:7 Gas System: Carbine Finish: Phosphate with chrome-lined bore Weight: 31.8 oz Why Choose This Barrel Shooters seeking a dependable 5.56 AR-15 barrel benefit from Green Mountain's reputation for quality manufacturing using premium 4150 chrome moly vanadium steel. The M4 contour offers a proven balance of strength and reduced weight, making it ideal for builds where maneuverability matters without sacrificing rigidity. Whether for home defense, range sessions, or competitive use, this barrel supports accurate shot placement and smooth operation across various ammunition types. Its chrome lining extends service life by protecting against fouling and erosion, while the phosphate exterior finish guards against environmental factors. The 1:7 twist ensures versatility, allowing effective use of both standard and match-grade loads. Benefits for Your Build Improves overall rifle handling with optimized profile and length Enhances longevity through advanced lining and finish technologies Supports reliable feeding and extraction in semi-automatic platforms Facilitates customization with standard threading and journal dimensions Invest in a barrel that prioritizes performance and longevity for your next AR-15 project.