Bravo Company (BCM) 6-Position Mil-Spec AR-15/LR-308 Receiver Extension Buffer Tube Stock Hardware Kit - Aluminum Matte

Building or refreshing an AR-15 or LR-308 platform rifle? The Bravo Company mil-spec receiver extension buffer tube stock hardware kit gives you everything needed to mount a collapsible stock to your lower receiver in one complete package. Bravo Company engineered these components to mil-spec standards, so you're working with parts that meet the same durability and tolerance requirements trusted by serious shooters and builders. This is the backbone of a proper carbine setup—no hunting through bins for individual pieces or worrying about compatibility headaches.

The kit includes the receiver extension tube itself (6-position, mil-spec dimensioned aluminum in matte finish), the end plate, castle lock nut, action spring, and carbine buffer assembly. That's your complete tube-and-buffer system ready to go. Bravo Company's mil-spec design works with a wide range of aftermarket and OEM stocks: BCM, VLTOR, LMT, Magpul CTR-M, Stag Arms, Colt, and other mil-spec-compatible options. If you're upgrading an existing rifle, replacing worn internals, or assembling from scratch, this kit eliminates guesswork and gets you one step closer to a complete, functional carbine.

Aluminum construction in matte finish is durable and sits cleanly with most AR builds. Whether you're setting up a home-defense rifle, a range gun, or a hunting platform, having all the receiver extension hardware from a reputable maker like Bravo Company means you're starting with a solid foundation. No surprises, no compatibility questions—just reliable, mil-spec hardware that works.

Key Features

• Complete mil-spec receiver extension system in one kit—no separate ordering
• 6-position collapsible tube for adjustable length of pull
• Includes end plate, castle nut, action spring, and carbine buffer assembly
• Compatible with most mil-spec collapsible stocks from major brands
• Aluminum construction with matte anodized finish
• Works on AR-15 and LR-308 platforms

Specifications

Frequently Asked Questions

What stocks will this kit work with?

The mil-spec receiver extension in this kit is compatible with collapsible stocks from Bravo Company, VLTOR, LMT, Magpul CTR-M, Stag Arms, Colt, and other manufacturers that use mil-spec dimensions. If your stock has a mil-spec diameter tube mounting point, it will work with this hardware.

Can I use this on both AR-15 and LR-308 rifles?

Yes. The mil-spec receiver extension and buffer system are compatible with both AR-15 and LR-308 platforms.

What's included in the kit?

This is a complete receiver extension kit containing the 6-position mil-spec aluminum tube, end plate, castle lock nut, M4 action spring, and carbine buffer assembly. You'll have everything needed to mount a compatible stock to your lower receiver.

Is this a complete buffer system or just the tube?

It's a complete system. The kit includes the receiver extension tube, end plate, castle nut, action spring, and carbine buffer—everything required for a functional receiver extension assembly.