BCM Mil-Spec Carbine Buffer Tube Kit

Description

The BCM Mil‑Spec Carbine Buffer Tube Kit provides the components required to mount a Mil‑Spec dimension collapsible stock to an AR‑15/M16/M4 lower receiver. The kit includes a Mil‑Spec receiver extension (6‑position) machined from 7075T6, receiver end plate, castle (lock) nut (M4), a carbine action spring, and a carbine buffer assembly. It is designed for use with common collapsible stock designs and fits Mil‑Spec dimension buffer tubes. The finish is matte and the kit is supplied as a complete assembly for standard carbine setups.

Key Specifications

• The receiver extension is Mil‑Spec, 6‑position and is machined from 7075T6.
• The package includes a receiver end plate compatible with Mil‑Spec assemblies.
• The kit supplies a castle (lock) nut (M4) for secure installation.
• The spring provided is a carbine action spring sized for carbine buffers.
• The kit contains a carbine buffer assembly suitable for standard carbine setups.
• Compatibility includes collapsible stocks from BCM, VLTOR, LMT, Magpul CTR‑M, Stag Arms, and Colt.
• The finish is supplied as matte.
• Intended fit is for AR‑15 rifles with Mil‑Spec buffer tube dimensions.

This BCM kit supplies the core hardware needed for a reliable carbine stock installation, delivered as a complete buffer tube assembly. Its Mil‑Spec dimensions and 7075T6 construction are suited to owners building or refurbishing standard AR‑15/M16/M4 style platforms who want straightforward compatibility with common collapsible stocks. The kit simplifies assembly and provides factory‑style components for a clean, standard carbine setup.

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