LMT Defense Monolithic 5.56x45 NATO Features The LMT Monolithic 20-inch barrel is engineered for superior precision and ballistic consistency. The 1:7 twist rate optimally stabilizes heavier bullets improving performance across varied 5.56 NATO loads. The rifle-length gas system enhances reliability by reducing recoil and improving shot-to-shot consistency making it an excellent option for precision shooting and sustained fire applications. Manufactured from high-strength chromoly steel this barrel is built for durability and heat resistance ensuring long-term performance under heavy use. The black finish provides corrosion protection and a sleek tactical appearance making it well-suited for demanding environments. LMT Defense Monolithic 5.56x45 NATO Specifications Caliber: 5.56x45 NATO Barrel Length: 20 inches Barrel Material: Chromoly Steel Operating Method: Direct Impingement Gas System: Rifle-Length Rifling Twist Rate: 1:7