TacFire AR-15 Build Kit 45 ACP 16" Black Nitride Semi-Auto - Rifle

The TacFire AR Build Kit packages the upper-receiver components needed to assemble a 45 ACP AR-platform rifle on a standard AR-15 lower receiver. Centered on a 16" black nitride barrel, the kit is paired with a slim 15" M-LOK free-float handguard for modern accessory mounting and a clean sight radius.

A stripped billet upper receiver anchors the build, joined by the rest of the kit's aluminum and steel hardware. A birdcage flash hider timed with a crush washer sits at the muzzle, while a Mil-Spec AR-15/.556 charging handle with an aluminum body and steel latch, dust cover, forward assist, standard receiver end plate, and Mil-Spec/commercial steel castle nut round out the small parts.

Built around the AR-15 platform with a semi-auto action, this kit is completed by adding a mil-spec AR-15 lower receiver, a 45 ACP bolt carrier group, and a 45 ACP magazine (each sold separately). The black nitride barrel finish delivers the corrosion resistance and uniform matte-black appearance that anchors the build's overall look.