FN AR-15 Barrel 10.5" 5.56 NATO M16 Profile Carbine Length, Black Phosphate - 20100037

FN AR-15 button rifled barrel chambered in 5.56 NATO with a 10.5" carbine length gas system and M16 profile. Features chrome-lined bore and chamber for corrosion resistance, cold hammer forged construction, and comes HPT/MPI tested. Direct drop-in replacement for standard AR-15 platforms with 1/2x28 muzzle threading.