The Tapco BCG-556 is a bolt carrier group made for the AR platform and sold as a firearm part. Tapco is the manufacturer, so the part comes from the same brand that makes the rest of its AR line. Because it is a single component, you can swap or refresh the bolt assembly in your AR without buying a new upper.

This is a firearm part and not a complete firearm, so it arrives as one component with no stock, handguard or magazines to sort through. The AR designation tells you which rifle family it is meant for, which narrows your search to AR-pattern builds. Tapco also lists it with its own TAP22025 part number, which makes it easy to confirm you are ordering the right item.

• Brand: Tapco
• Model: BCG-556
• Manufacturer: Tapco
• Platform: AR
• Product Type: AR BCG (firearm part)
• Manufacturer Part Number: TAP22025
• UPC: 810122800248