Green Mountain 300 BLK AR-15 Barrel 16" M4 Fluted Phosphate

Engineered for precision and reliability, the Green Mountain 300 BLK AR-15 Barrel delivers exceptional performance in a versatile 16-inch package. This M4-profile barrel is specifically chambered for .300 Blackout, making it an ideal choice for shooters seeking a balance of maneuverability, accuracy, and compatibility with both supersonic and subsonic ammunition in tactical or sporting applications. Key Features and Benefits Fluted M4 Profile: The distinctive fluting reduces overall weight while maintaining structural integrity, improving handling and reducing fatigue during extended use without sacrificing durability. Manganese Phosphate Finish: Provides robust corrosion resistance and a non-reflective surface, ensuring long-term protection in harsh environments. Chrome-Lined Bore and Chamber: Enhances longevity and facilitates easy cleaning, delivering consistent accuracy even after thousands of rounds. 1:7 Twist Rate: Optimized for stabilizing a wide range of .300 BLK bullet weights, from light supersonic loads to heavier subsonic projectiles. Carbine-Length Gas System: Ensures reliable cycling across various ammunition types and suppressor configurations. Technical Specifications Barrel Length: 16 inches Barrel Profile: M4 Fluted Platform: AR-15 Cartridge: .300 Blackout Gas System: Carbine Gas Block Journal: 0.75 inches Twist Rate: 1:7 Muzzle Thread: 5/8x24 Finish: Mag Phosphate Material: 4150 Chrome Moly Vanadium Weight: 30 oz Why Choose This Green Mountain Barrel Green Mountain barrels are renowned for their precision manufacturing and mil-spec standards. This model addresses common shooter concerns like weight management, heat dissipation through fluting, and reliable function with modern .300 BLK loads. Whether building a new upper or upgrading an existing rifle, it provides a dependable foundation for accurate, versatile performance. Pair this barrel with your preferred gas block, muzzle device, and handguard to complete a custom AR-15 setup tailored to your needs.