The TacFire BU-556-5 is a complete AR-15 upper assembly in 5.56x45mm NATO with a 5 inch black nitride barrel, a black anodized 7075-T6 aluminum receiver, an M-LOK handguard and a bolt carrier group. It is optic ready with no sights.
- Type : Complete Upper Receiver
- Caliber : 5.56x45mm NATO
- Barrel Length : 5"
- Barrel Finish : Black Nitride
- Receiver : 7075-T6 Aluminum, Black Anodized
- Handguard : M-LOK
- Sights : None, Optic Ready
- Includes : Bolt Carrier Group
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