The TacFire 9mm AR Build Kit (brand part no. SSPK9MMLPK4) bundles the parts to assemble a 9mm AR pistol around a 4.5-inch USA-made barrel, using a semi-automatic action with a manual thumb safety.

Key Specifications

• Includes a 9mm, 4.5-inch USA-made barrel.
• Includes a matched 9mm bolt carrier group.
• Includes a Mil-Spec upper receiver, made in the USA.
• Includes a 4-inch slim free-float M-LOK handguard.
• Includes a complete lower parts kit, made in the USA.
• Includes a Mil-Spec pistol buffer tube (aluminum, with foam cover) rather than a shoulder-stock tube.
• Includes a heavy buffer and buffer tube spring.
• Includes a Mil-Spec charging handle, dust cover, and forward assist.
• Includes a 1/2×36-threaded flash hider.
• Uses a manual thumb safety and semi-automatic action.

Frequently Asked Questions

Does this kit include a lower receiver? No, this kit does not include a stripped lower receiver; it supplies the complete lower parts kit to build onto a lower you provide.

Is this a pistol or rifle build kit? It ships with a Mil-Spec pistol buffer tube rather than a shoulder stock, so as built it is intended as an AR pistol. Adding a shoulder stock with this 4.5-inch barrel would create a Short-Barreled Rifle, which requires an approved NFA registration.

What barrel and gas system does this kit use? It includes a 4.5-inch, 9mm USA-made barrel with a matched 9mm bolt carrier group.

Buy the TacFire 9mm AR Pistol Build Kit

Assemble a compact 9mm AR pistol around TacFire’s complete parts kit, built with a pistol buffer tube. Browse more of our AR15 build kits selection. Order the TacFire 9mm AR Pistol Build Kit today for fast, insured shipping from a Lubbock, TX gun shop.