FN America 20" 5.56 NATO AR 15 Barrel

FN America 20" 5.56 NATO AR 15 Barrel FN ARA 15 premium button rifled barrels are are manufactured using U.S. sourced Chrome Moly Venadium material per Mil-B-11595E. Each barrel is High Pressure Tested (HPT) and Magnetic Particle Inspected (MPI) to ensure that it is free of microA stresses or flaws, resulting in consistency and quality in every barrel shipped from the factory. The bore and chamber are chrome lined to help resist corrosion and provide resistance to heat erosion which greatly improves barrel life and reliable chambering / extraction. The M4 style feed ramps and barrel extension provide consistent feeding and the matte black Manganese Phosphate finish resists external corrosion and oxidation. Features: 5.56NATO Button Broached Cold Hammer Forged Rifle Length Gas Chrome Lined 1:7 Twist