The TacFire AR-15 Buffer Tube Kit is a complete black buffer assembly built around a mil-spec pistol buffer tube, brand part number MAR049A. The kit bundles everything needed to finish out a build in one box: the foam-insert pistol tube itself, a 3-ounce buffer, a carbine-length buffer spring, a regular end plate, and a castle nut. Buying the parts as a matched kit takes the guesswork out of sourcing compatible components separately, making it a straightforward way to finish a pistol-brace or fixed-stock AR-15 build.

Key Specifications

• Kit type is a complete buffer assembly.
• Includes a mil-spec pistol buffer tube with a foam insert.
• Includes a 3-ounce buffer.
• Includes a carbine-length buffer spring.
• Includes a regular end plate.
• Includes a castle nut.

Frequently Asked Questions

What’s included in this kit? A mil-spec pistol buffer tube with foam insert, a 3-ounce buffer, a carbine-length buffer spring, an end plate, and a castle nut.

What color is the tube finished in? Black.

Buy the TacFire Buffer Tube Kit

Finish your build with this complete kit from TacFire, part of our gun parts selection. Order it from our Lubbock, Texas gun shop for fast, direct shipping right to your door.