FN AR-15 5.56x45mm NATO 16" Carbine Length Gas System Barrel, Black Phosphate - 36421

FN cold hammer-forged AR-15 barrel chambered in 5.56x45mm NATO with a 16-inch carbine length gas system. The barrel features chrome-lined bore construction and black phosphate finish for corrosion resistance and durability. Direct drop-in replacement for AR-15 platforms; manufactured using FN's proprietary Chrome Moly Vanadium steel and magnetic particle tested for quality assurance.