TacFire BU9MM4 9mm Pistol Upper — 4″ Black Nitride

This TacFire BU9MM4 is a complete 9mm pistol upper assembly built for AR-platform lowers. It ships ready to install and includes a bolt carrier group for straightforward installation. The assembly pairs a 4" Black Nitride barrel with a 7075-T6 aluminum receiver finished in black anodize and an M-LOK handguard, and is optic-ready for modern sighting solutions.

Key Specifications

• The caliber is 9mm.
• The barrel length is 4 inches.
• The barrel finish is Black Nitride.
• The receiver material is 7075-T6 aluminum.
• The receiver finish is black anodized.
• The handguard style is M-LOK.
• The sighting configuration is optic ready.
• The product is supplied as a complete upper assembly.
• The package includes a Bolt Carrier Group.

Designed for compact, duty-style and range-focused builds, this upper provides a durable, low-maintenance barrel finish and a robust 7075-T6 receiver for long-term service. The M-LOK handguard supports modern accessory mounting while the optic-ready top rail keeps the platform adaptable to a wide range of sighting systems. Its configuration makes it suitable for shooters seeking a reliable, compact 9mm AR-style solution for training, range use, or close-quarters utility.