FN America Ar15 Barrel 14.7inch Bb M16 5.56 Midlength. In order to make an impact and have a reliable system that fires under all conditions the barrel needs to be built from the best materials. Fn America made this high quality barrel with M4 style feed ramps and extension so that the barrel provides consistent feeding. The bore and chamber are chrome-lined to resist corrosion and provide heat-erosion resistance which greatly improves barrel life and reliable chambering / extraction. The matte black manganese phosphate finish resists external corrosion and oxidation. When you need a durable barrel that delivers every time the FN America AR-15 Barrel is the right choice. Package Contents: FN America Ar15 Barrel 14.7inch Bb M16 5.56 Midlength The FN America Ar15 Barrel 14.7inch Bb M16 5.56 Midlength is a quality addition to the FN America lineup. For more great deals on AR15 Barrels by FN America please browse our FNH USA Gun Parts page.