The TacFire pistol upper assembly (brand part no. BU5565) is a completely built 5.56 NATO upper ready to drop onto a compatible AR-platform pistol lower. It pairs a compact 5-inch black nitride-finished barrel with a black anodized 7075-T6 aluminum receiver and an M-LOK handguard, and it ships with a bolt carry 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 of the builder’s choice. This assembly gives AR pistol owners a compact, ready-to-run 5.56 upper option without buying a second complete firearm.

Key Specifications

• Chambered in .223 Remington / 5.56 NATO.
• Barrel measures 5 inches in length, built for a compact AR pistol.
• 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.
• Weighs approximately 3.2 pounds as a complete assembly.
• 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? .223 Remington / 5.56 NATO.

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

Buy the TacFire Pistol Upper Assembly, 5.56 5-inch

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