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TacFire
Overview
The TacFire 45 ACP 4" Upper Assembly is a complete upper designed for the AR-9 platform, featuring a 4-inch barrel specifically chambered for .45 ACP. This setup is ideal for builders looking to create a compact yet powerful firearm, as the shorter barrel enhances maneuverability while still delivering the performance expected from a .45 caliber round. You’ll commonly find this upper assembly in builds aimed at close-quarters applications or personal defense scenarios.
Specifications
Available Merchants(4)
Prices checked
Stock Alert
Build history on GunPartPicker
Builders have been adding the TacFire 45 ACP 4" Upper Assembly with BCG to their builds on GunPartPicker since March 2026. All time, it ranks #649 of the 1,700 upper receivers builders have added.
It was out of stock everywhere we track for all of September 2026, and today none of the 4 retailers we track has it in stock right now. Listed prices start at $261.48 at BattleHawk Armory for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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