TacFire BU-556-10 | AR-15 Upper | 5.56 NATO | 10″ Barrel

This TacFire BU-556-10 is a factory-built AR-15 complete upper chambered in .223 REM/5.56 NATO and fitted with a 10″ black nitride barrel. It ships ready to install on a compatible lower and includes a bolt carrier group. The upper features a black anodized 7075-T6 aluminum receiver and an M-LOK handguard, and is delivered optic-ready without iron sights.

Product Specifications

• The manufacturer is TacFire.
• The model/part number is BU-556-10.
• The product type is Complete.
• The caliber is .223 REM/5.56 NATO.
• The barrel length is 10″.
• The barrel finish is Black Nitride.
• The barrel length range is 10″ to 10.99″.
• The handguard style is M-LOK.
• The handguard finish is Black.
• The receiver is made from 7075-T6 aluminum and has a Black Anodized finish.
• The sighting setup is None, Optic Ready.
• The upper includes a Bolt Carrier Group.
• The product weight is 3.669.
• The UPC is 729205518300.

This complete upper is aimed at builders and shooters who want a compact, ready-to-install AR-15 upper for pistol-format builds or short-range training and target work. Its 10″ black nitride barrel, M-LOK handguard, and optic-ready receiver provide a straightforward foundation for a functional, compact AR platform build.