FN AR-15 5.56 NATO 14.7" M4 Carbine Length Barrel, Black Phosphate - 20100044

FN premium button-rifled AR-15 barrel in 5.56 NATO with 14.7" length and M4 profile carbine length gas system. The barrel features chrome-lined bore and chamber for corrosion resistance and extended barrel life, and is manufactured from U.S. sourced Chrome Moly Vanadium material per Mil-B-11595E specifications with High Pressure Testing (HPT) and Magnetic Particle Inspection (MPI) for quality assurance.