The TacFire AR Pistol Build Kit, 5.56x45mm NATO, 7.5-Inch Barrel, Black (TacFire part no. SSPK556LPK) bundles the major components needed to build a compact AR pistol around a short 7.5-inch barrel. The kit includes a USA-made 5.56x45mm NATO 7.5-inch barrel, a bolt carrier group, a USA-made mil-spec upper receiver, a 7-inch slim free-float M-LOK handguard, a USA-made complete lower parts kit, a standard receiver end plate, a mil-spec/commercial castle nut, a mil-spec aluminum pistol buffer tube with foam cover, a heavy buffer, a buffer tube spring, a mil-spec charging handle, a dust cover, a forward assist, and a threaded flash forwarder. It ships with a pistol buffer tube and no shoulder stock.

Key Specifications

• Barrel is 5.56x45mm NATO, 7.5 inches, USA made.
• Kit includes a bolt carrier group and a USA-made mil-spec upper receiver.
• Includes a 7-inch slim free-float M-LOK handguard.
• Includes a complete USA-made lower parts kit, receiver end plate, castle nut, and mil-spec aluminum pistol buffer tube with foam cover.
• Also includes a heavy buffer, buffer tube spring, mil-spec charging handle, dust cover, forward assist, and threaded flash forwarder.

Frequently Asked Questions

Does this kit include a lower receiver? No, it includes the internal lower parts kit and buffer system, but the stripped lower receiver itself is not included and must be sourced separately.

What handguard and muzzle device come in this kit? A 7-inch slim free-float M-LOK handguard and a threaded flash forwarder.

What twist and finish does the barrel have? It’s a black-finished 7.5-inch barrel chambered in 5.56x45mm NATO.

Buy the TacFire AR Pistol Build Kit, 5.56x45mm NATO, 7.5-Inch Barrel, Black

Order it from our Lubbock, Texas gun shop and get nearly everything you need for a compact AR pistol build in one box. Shop more TacFire kits in our AR15 build kits category.