TacFire AR Pistol Build Kit, 45 ACP, AR-10 Lower, Black Nitride, Sports South Exclusive

The TacFire AR Pistol Build Kit, 45 ACP, AR-10 Lower, Black Nitride, Sports South Exclusive bundles the major components for a compact .45 ACP AR pistol build around a 7.5-inch nitride-finished barrel. The kit contains the .45 ACP 7.5-inch nitride barrel, a birdcage flash hider with crush washer, an ultra-slim 7-inch clamp-on M-LOK free-float handguard, an AR-15 5.56/.223/.300 AAC stripped billet upper receiver with M4 feed ramps, a .45 ACP-Glock-pattern bolt carrier group, a mil-spec aluminum charging handle with a steel latch, a dust cover, a forward assist, a standard receiver end plate, a mil-spec/commercial steel castle nut, a foam-wrapped pistol buffer tube, a 5.5-ounce buffer with tube spring, a USA-made lower parts kit, and a standard A2-style black pistol grip. It ships with a pistol buffer tube and no shoulder stock, making it an ordinary Title I build kit rather than a regulated item.

Key Specifications

• Barrel is chambered in 45 ACP, measuring 7.5 inches with a black nitride finish.
• Includes a birdcage flash hider with crush washer threaded 5/8-24.
• Includes an AR-15 stripped billet upper receiver with M4 feed ramps and a matching .45 ACP-Glock-pattern bolt carrier group.
• Includes an ultra-slim 7-inch clamp-on M-LOK handguard and a USA-made lower parts kit with A2-style grip.
• Buffer system is a pistol-length setup with a foam-wrapped tube, 5.5-ounce buffer, and tube spring.

Frequently Asked Questions

Does this kit include a lower receiver? No, the stripped lower receiver itself must be sourced separately from an FFL; this kit provides the lower parts kit, grip, and buffer components.

Is this kit an NFA item? No, it ships with a pistol buffer tube and no shoulder stock, so it’s an ordinary Title I build kit. Installing it on a shouldered, rifle-configured lower without registration would create an unregistered short-barreled rifle.

What thread pitch is the muzzle cut for? 5/8-24, matching the included birdcage flash hider.

Buy the TacFire AR Pistol Build Kit, 45 ACP, AR-10 Lower, Black Nitride, Sports South Exclusive

Order it from our Lubbock, Texas gun shop for a nearly complete .45 ACP AR pistol build in one box. Shop more TacFire kits in our AR15 build kits category.