Bravo Company BCM Mil-Spec Stock Hardware Mount Kit AR-15
Bravo Company
$57.95
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Bravo Company
Bravo Company BCM Mil-Spec Stock Hardware Mount Kit AR-15
The BCM Mil-Spec Carbine Stock Hardware Mounting Kit from Bravo Company USA gives AR-15 builders and upgraders everything needed to properly install a mil-spec collapsible stock assembly on any standard AR-15 lower receiver.
- Includes mil-spec 6-position receiver extension (buffer tube) for reliable stock fitment
- Complete kit with receiver end plate, castle nut, and M4 action spring
- Carbine buffer assembly included for smooth, consistent cycling performance
- Compatible with BCM, VLTOR, LMT, Magpul CTR-M, Stag Arms, Colt, and more
- Mil-spec dimensions ensure proper fit with standard AR-15 lower receivers
- Bravo Company USA quality — built to the same standards as their complete rifles
Who This Is For
This kit is ideal for AR-15 builders completing a lower receiver build, shooters replacing worn or damaged buffer tube components, or anyone upgrading from a commercial-spec setup to mil-spec dimensions. If you want a one-stop hardware solution that eliminates the guesswork of sourcing individual components, this BCM kit delivers everything you need in a single, trusted package.
Specifications
| Brand | Bravo Company USA (BCM) |
|---|---|
| Platform | AR-15 |
| Buffer Tube Standard | Mil-Spec |
| Positions | 6-Position Adjustable |
| Included Components | Receiver Extension, End Plate, Castle Nut, M4 Action Spring, Carbine Buffer |
| Stock Compatibility | BCM, VLTOR, LMT, Magpul CTR-M, Stag Arms, Colt, and others |
| Buffer Type | Carbine |
| Finish | Hardcoat Anodized |
Frequently Asked Questions
Will this kit work with my existing collapsible stock?
This kit is designed for mil-spec dimension collapsible stocks. It is confirmed compatible with stocks from BCM, VLTOR, LMT, Magpul (CTR-M), Stag Arms, and Colt, among others. If your stock is mil-spec diameter, it should fit correctly. Note that commercial-spec stocks have a slightly larger internal diameter and will not fit a mil-spec tube — verify your stock's specification before purchasing.
Does this kit work with pistol-caliber AR builds or only 5.56/.223?
This kit includes a standard carbine buffer and M4 action spring optimized for 5.56/.223 NATO AR-15 platforms. For pistol-caliber carbine (PCC) builds chambered in 9mm or similar, a dedicated buffer and spring combination is typically required. Consult your lower receiver manufacturer's recommendations before using this kit in a non-standard caliber build.
What tools do I need to install this hardware kit?
Installation requires an AR-15 armorer's wrench (for torquing the castle nut and end plate) and a vise block to secure the lower receiver during assembly. Proper torque on the castle nut — typically 40 ft-lbs, then staked — is critical for reliable function. No specialized gunsmithing experience is required, but following a reputable installation guide or having a qualified armorer perform the work is always recommended.
