LBE Unlimited AR-15 Mil-Spec Buffer Tube Kit Brown
LBE Unlimited
$48.69
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LBE Unlimited
LBE Unlimited AR-15 Mil-Spec Buffer Tube Kit Brown
The LBE AR Mil-Spec Buffer Tube Kit in Brown gives builders and upgraders everything needed to complete or restore a carbine-length AR-15 stock assembly in one convenient, USA-made package.
- Complete mil-spec carbine buffer tube kit in a brown finish
- Includes six-position mil-spec diameter buffer tube for stock compatibility
- Carbine-length recoil spring ensures reliable cycling and felt-recoil management
- Standard carbine recoil buffer absorbs bolt carrier group impact effectively
- Receiver end plate and castle nut included for a full, secure installation
- Made in the USA by LBE Unlimited, a trusted name in AR components
Who This Is For
This kit is ideal for AR-15 builders completing a new carbine build, shooters replacing worn or damaged buffer components, or anyone looking for a reliable mil-spec buffer tube assembly with a distinctive brown finish. It suits both first-time builders and experienced gunsmiths who want a complete, no-fuss solution from a reputable American manufacturer.
Specifications
| Brand | LBE Unlimited |
|---|---|
| Finish | Brown |
| Tube Diameter | Mil-Spec (1.14") |
| Tube Length / Positions | Carbine, 6-Position |
| Buffer Type | Standard Carbine |
| Spring Type | Carbine-Length Recoil Spring |
| Included Hardware | Castle Nut, Receiver End Plate |
| Platform | AR-15 |
| Country of Origin | USA |
Frequently Asked Questions
What is the difference between mil-spec and commercial buffer tubes?
Mil-spec buffer tubes have a slightly smaller outer diameter (approximately 1.14") and a more precise tolerance than commercial-spec tubes (approximately 1.17"). This matters because AR-15 stocks are designed for one or the other — using a mil-spec stock on a commercial tube, or vice versa, will result in a poor or impossible fit. This LBE kit uses a true mil-spec diameter tube, so it is compatible with any mil-spec AR-15 stock.
Will this buffer tube kit work with my existing lower receiver and stock?
Yes, as long as your lower receiver accepts a standard AR-15 carbine buffer tube and your stock is designed for mil-spec diameter tubes. The six-position design is compatible with the vast majority of mil-spec AR-15 collapsible stocks on the market. If you are unsure of your stock's spec, check the manufacturer's documentation or measure the interior diameter of the stock's receiver channel.
Do I need any additional parts to complete the buffer tube installation?
No — this kit includes every component required for a complete buffer tube assembly: the six-position mil-spec tube, carbine recoil spring, standard carbine buffer, receiver end plate, and castle nut. You will need basic AR-15 armorer's tools such as a castle nut wrench and an end plate tool to properly torque and stake the castle nut, but no additional parts are necessary.
