The LBE Unlimited Mil-Spec Buffer Tube Kit (brand part no. MILBUFKTRED) is a complete stock hardware set for AR-15 builders who want mil-spec compatibility without buying parts piecemeal. The kit includes a 6-position mil-spec buffer tube, a matched recoil spring, a standard recoil buffer, a receiver end plate, and a castle nut, all finished in a distinctive red anodized color. Because it’s mil-spec diameter, it’s compatible with the wide range of aftermarket collapsible stocks built to that same standard, giving builders flexibility to swap stocks later without replacing the tube.

Key Specifications

• Built to mil-spec diameter for compatibility with the widest range of aftermarket AR-15 stocks.
• Features 6-position adjustability for length-of-pull customization.
• Includes a matched recoil spring sized for the buffer tube.
• Ships with a standard recoil buffer for reliable cycling.
• Comes with a receiver end plate to complete installation.
• Includes a castle nut to lock the tube in place.
• Finished in red anodizing for a distinctive look.

Frequently Asked Questions

Is this tube mil-spec or commercial diameter? It’s mil-spec diameter, compatible with the widest range of aftermarket stocks.

How many positions does it adjust to? Six positions for length-of-pull adjustment.

What’s included besides the tube? A recoil spring, recoil buffer, receiver end plate, and castle nut.

Buy the LBE Unlimited Mil-Spec Buffer Tube Kit, 6-Position, Red

Build on a mil-spec foundation and keep your stock options open down the road. Order the LBE Unlimited Mil-Spec Buffer Tube Kit from our AR buffer system lineup. Ships fast from a Lubbock, TX gun shop.