The LMT Defense MRP 5.56mm 16" Piston Operation AR-15 Barrel is a high-performance, monolithic-compatible barrel crafted for demanding applications where reliability and longevity are paramount. This 16-inch barrel features a chrome-lined bore and chamber to provide superior resistance to corrosion, wear, and heat buildup, ensuring consistent accuracy even during extended shooting sessions. Made from premium chromoly (CB) steel and cryogenically treated, it relieves internal stresses for enhanced durability and extended barrel life under heavy use. The 1:7" right-hand twist rate offers excellent stabilization for a broad spectrum of 5.56x45mm NATO ammunition, including popular 55-77 grain loads, making it versatile for tactical, duty, or precision-oriented builds.Engineered specifically for LMT's piston-driven monolithic receiver systems, this barrel integrates a dedicated piston operating rod to minimize carbon fouling in the upper receiver compared to direct impingement designs, promoting cleaner operation and reduced maintenance in adverse conditions. It comes equipped with a standard A2 birdcage flash hider to effectively suppress muzzle flash, improving low-light visibility and reducing signature during operations. The seamless compatibility with LMT monolithic uppers allows for quick, tool-efficient installation while maintaining tight tolerances and optimal alignment for peak performance.At 2.62 pounds, this barrel delivers an ideal balance of length, weight, and robustness, making it well-suited for mid-length or rifle-length configurations that prioritize controllability and velocity without excessive bulk. Whether building a new piston-driven MRP rifle or upgrading an existing platform, this barrel provides the durability, accuracy, and reliability that professionals and enthusiasts expect from LMT Defense.Purchase the LMT Defense MRP 5.56mm 16" Piston Operation AR-15 Barrel today at Battlehawk Armory and elevate your build with this premium component! Specifications: Weight: 2.62 lbs Caliber: 5.56x45mm NATO Barrel Material: Chromoly (CB) Operating Method: Piston Rifling Twist Rate: 1:7" Barrel Length: 16"