The TacFire rifle upper assembly (brand part no. BU45ACP16) is a completely built .45 ACP upper ready to drop onto a compatible AR-platform lower. It pairs a 16-inch black nitride-finished barrel with a black anodized 7075-T6 aluminum receiver and an M-LOK handguard, and it ships with a bolt carrier group included, so there is no need to source parts separately. The upper is optic ready with no iron sights included, leaving the top rail open for the red dot or scope of the builder’s choice. This assembly gives AR owners a straightforward way to add a .45 ACP pistol-caliber option to an existing lower without buying a second complete rifle.

Key Specifications

• Chambered in .45 ACP for a pistol-caliber AR build.
• Barrel measures 16 inches in length.
• Barrel finished in black nitride for corrosion resistance and durability.
• Receiver machined from black anodized 7075-T6 aluminum.
• Fitted with an M-LOK handguard for accessory mounting.
• Ships as a complete upper, ready to install on a compatible lower.
• Configured optic ready, with no iron sights included.
• Includes a bolt carrier group in the box.
• Sold as a complete, ready-to-use upper assembly.

Frequently Asked Questions

Does this upper include a bolt carrier group? Yes, a bolt carrier group is included.

What caliber is this upper chambered in? .45 ACP.

Does this upper come with sights? No, it is optic ready with no iron sights included.

Buy the TacFire Rifle Upper Assembly, .45 ACP

Order this TacFire upper from our Lubbock, Texas gun shop for fast, direct shipping, and browse more AR15 parts and accessories to finish your build.