TacFire BU-556-16 | 5.56 NATO | 16in Upper

This TacFire BU-556-16 complete upper assembly is built for installation on an AR-platform lower and ships ready with a bolt carrier group included. It is chambered for .223 Rem/5.56 NATO and uses a 16″ black nitride finished barrel matched to a black anodized 7075-T6 aluminum receiver and M-LOK handguard. The upper is optic-ready and supplied without iron sights.

Designed for range training and competitive/practical target shooting, this upper provides a standard 16″ barrel length common to many AR-15 applications.

Product Specifications

• The product type is Complete.
• The caliber is .223 REM/5.56 NATO.
• The barrel length is 16″.
• The barrel finish is Black Nitride.
• The receiver finish is Black Anodized.
• The receiver material is 7075-T6 Aluminum.
• The handguard style is M-LOK.
• The handguard finish is Black.
• Sights are listed as None, Optic Ready.
• The assembly includes a Bolt Carrier Group.
• The product is designed to fit an AR-platform lower.
• The weight is listed as 4.9.
• The barrel length range is 16″ to 16.99″.
• The UPC is 686294505850.

This TacFire BU-556-16 upper delivers standard 16″ barrel performance in a turnkey assembly for shooters who want a reliable, straightforward AR upgrade or build component. Its black nitride barrel and anodized 7075-T6 receiver present a durable, low-glare finish while the M-LOK handguard allows modern accessory mounting and ergonomic handling. Choose this upper when you need a ready-to-install option for range work or competition-style shooting that keeps configuration simple and dependable.