Green Mountain 5.56 AR-15 Barrel 16" M4 416SS Passivated

Upgrade your AR-15 build with the Green Mountain 5.56 AR-15 Barrel, a 16-inch M4-profile option precision-engineered for reliability and performance in tactical and sporting applications. Crafted from high-quality 416 stainless steel with a passivated finish, this barrel delivers exceptional corrosion resistance while maintaining the durability demanded by serious shooters. Key Features M4 Profile Design: Balances weight and rigidity for improved handling without sacrificing strength, ideal for midlength configurations. 1:7 Twist Rate: Optimizes stabilization for a wide range of 5.56 NATO and .223 Remington ammunition, supporting both lightweight and heavier projectiles for versatile accuracy. Midlength Gas System: Ensures reliable cycling and smooth operation in semi-automatic platforms. 0.75-Inch Gas Block Journal: Compatible with standard low-profile or adjustable gas blocks for easy customization. 1/2x28 Muzzle Threading: Allows seamless attachment of suppressors, flash hiders, or muzzle brakes. Specifications Barrel Length: 16 inches Material: 416 Stainless Steel (passivated finish) Chamber: 5.56 NATO Platform: AR-15 Weight: 31.4 oz Gas System: Midlength Twist Rate: 1:7 Muzzle Thread: 1/2x28 Why Choose This Barrel This Green Mountain barrel addresses common pain points like premature wear, inconsistent accuracy, and compatibility issues. The passivated stainless construction resists rust and fouling far better than standard finishes, extending service life in harsh environments. Its M4 profile reduces overall rifle weight compared to heavier contours while preserving the structural integrity needed for sustained fire. Whether you're building a home-defense carbine or a range-ready precision rifle, this component provides a solid foundation for optimal function and longevity. Invest in proven American manufacturing for your next AR-15 project and experience the difference in build quality and performance.