This TacFire BU-556-16 is a complete AR-platform upper assembly chambered in 5.56x45mm NATO and built for immediate installation on a compatible lower. It features a 16-inch black nitride barrel and a black anodized 7075-T6 aluminum receiver. The assembly includes a bolt carrier group and an M-LOK handguard for modern accessory compatibility.
Key Specifications
- The barrel length is 16 inches for standard configuration and handling.
- The caliber is 5.56x45mm NATO as specified.
- The barrel finish is Black Nitride for enhanced surface hardness and corrosion resistance.
- The receiver is made from 7075-T6 aluminum with a black anodized finish.
- The handguard type is M-LOK in a black finish for accessory mounting.
- The product is sold as a Complete upper assembly (requires a lower to function).
- The unit ships with a Bolt Carrier Group included to provide a ready-to-install upper.
- Sight configuration is listed as None / Optic Ready, allowing optics to be mounted.
- The caliber listing also appears as .223 REM/5.56 NATO in product attributes.
- The barrel length range is specified as 16 to 16.99 inches in the product attributes.
Designed for builders and shooters who prioritize a dependable, serviceable upper, the TacFire BU-556-16 provides a straightforward foundation for range use, training, and general-purpose AR builds. Its combination of a 7075-T6 receiver, nitride-treated barrel, and M-LOK handguard offers compatibility with common AR accessories while keeping the configuration clean and functional.
This description was generated with AI and may contain errors. Verify specifications and legal restrictions with the manufacturer before purchase. Provided “as-is” without warranties or guarantees.
