Faxon Firearms complete AR-15 upper receiver groups are a great option to complete your next build. Each upper receiver group is assembled with care from parts made in-house in the Faxon facility. These upper receiver groups include an Enhanced Forged 7075-T6 Type III hard coat anodized upper receiver, button rifled barrel and a bolt carrier group. Product #: 722583 Manufacturer #: FX338A2125-U-MIDWAY UPC #: 816341029675