This FN AR-15 barrel is an 18-inch rifle-length gas system barrel for 5.56mm NATO. It is cold hammer forged from chrome moly vanadium steel and has a chrome-lined bore and chamber. The exterior has a matte black manganese phosphate finish, and the feed ramps are M4 style.

A replacement or upgrade barrel suits an owner who wants to refresh an AR-15 or build one from parts. The chrome lining is there to resist corrosion and heat erosion over a long service life. The M4 style feed ramps are the layout most AR owners know. Because this is a barrel and not a complete firearm, it ships to your door where the law allows. The listing names the 5.56mm NATO chambering, so confirm that match before ordering.

Key features

• Cold hammer forged chrome moly vanadium steel
• Chrome-lined bore and chamber
• 18-inch rifle-length gas system
• M4 style feed ramps
• Matte black manganese phosphate finish

The barrel ships to your door where the law allows it.