Crafted with precision the FN 18'' AR-15 Chrome-Lined Barrel stands out as a top-tier choice for firearm enthusiasts seeking durability and performance. Utilizing high-grade Chrome Moly Vanadium steel this barrel mirrors the resilience found in FN's renowned machine gun barrels designed to withstand the rigors of fully automatic fire. Each barrel undergoes meticulous Magnetic Particle testing ensuring unmatched consistency and quality. The chrome-lined bore and chamber offer superior corrosion resistance and heat erosion protection significantly enhancing barrel longevity and reliability. The inclusion of M4 style feed ramps and a robust barrel extension ensures smooth and consistent feeding. Finished with a matte black Manganese Phosphate coating this barrel not only resists external corrosion and oxidation but also maintains a sleek and tactical appearance. Ideal for those seeking a rifle-length barrel that delivers exceptional performance and reliability.