The TacFire Mil-Spec 6-Position Buffer Tube Kit (brand part number MAR050B) is a complete AR-15 stock assembly kit finished in black matte, not just a bare tube. The kit includes a 6-position adjustable stock with butt pad, a Mil-Spec 6-position buffer tube, a carbine-length buffer spring, a regular end plate, a 3 oz. carbine buffer, and a castle nut, giving you everything needed to build or replace a complete adjustable stock setup in one order. It’s a straightforward way to get a functional, mil-spec-compatible stock system without sourcing six separate parts.

Key Specifications

• Includes a 6-position adjustable stock and butt pad.
• Includes a Mil-Spec 6-position buffer tube.
• Includes a carbine-length buffer spring.
• Includes a regular end plate.
• Includes a 3 oz. carbine buffer.
• Includes a castle nut.
• Finished in black matte.

Frequently Asked Questions

Is this just a buffer tube, or a full stock kit? It’s a complete kit: stock, buffer tube, spring, end plate, buffer, and castle nut.

Is the buffer tube mil-spec sized? Yes, it’s a Mil-Spec 6-position buffer tube.

What weight is the included buffer? A 3 oz. carbine buffer.

Buy the TacFire Mil-Spec 6-Position Buffer Tube Kit for AR-15 – Black

Get every part needed for a complete adjustable stock build in one box. Order it from our TacFire lineup, part of our AR-15 stocks, forends, and forearms selection, at our Lubbock, Texas gun shop for fast, direct shipping.