This 18-inch AR-15 barrel is expertly crafted from high-quality U.S. sourced Chrome Moly Vanadium steel adhering to Mil-B11595E standards. Designed for superior performance each barrel undergoes rigorous High Pressure Testing and Magnetic Particle Inspection ensuring unmatched durability and reliability. The chrome-lined bore and chamber not only resist corrosion but also enhance heat erosion resistance significantly extending the barrel's lifespan. Featuring M4 style feed ramps this barrel guarantees smooth and consistent feeding. Its sleek matte black Manganese Phosphate finish offers excellent protection against external corrosion and oxidation making it a top choice for shooters seeking longevity and precision.