FN AR-15 5.56 NATO 16" Button Rifled M16 Profile Mid-Length Gas System Barrel, Black Phosphate - 20100041

FN AR-15 replacement barrel chambered in 5.56 NATO with 16" length and M16 profile featuring mid-length gas system. Constructed from Chrome Moly Venadium steel with button rifling (1:7 twist), chrome-lined bore and chamber, and black phosphate finish. High Pressure Tested (HPT) and Magnetic Particle Inspected (MPI) for quality assurance, compatible with standard AR-15 platforms.