LBE Unlimited AR-15 Mil-Spec Buffer Tube Brown
LBE Unlimited
$22.69
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LBE Unlimited
LBE Unlimited AR-15 Mil-Spec Buffer Tube Brown
The LBE Unlimited AR Mil-Spec Buffer Tube in Brown is a precision-machined carbine receiver extension built to mil-spec diameter standards, making it a reliable foundation for any AR-15 collapsible stock build or upgrade.
- Mil-spec diameter fits all standard collapsible AR-15 stocks
- Brown finish adds a unique, tactical aesthetic to your build
- Pre-threaded for fast, hassle-free installation on your lower receiver
- Six-position carbine receiver extension for adjustable length of pull
- USA-made by LBE Unlimited, a trusted name in AR parts
- Ideal as a primary component or a reliable spare parts bin addition
Who This Is For
This buffer tube is perfect for AR-15 builders, gunsmiths, and enthusiasts who need a dependable mil-spec carbine receiver extension. Whether you're completing a fresh build, replacing a worn tube, or stocking up on quality spare parts, the LBE Brown Mil-Spec Buffer Tube delivers consistent performance and fit at a great value.
Specifications
| Brand | LBE Unlimited |
|---|---|
| Finish | Brown |
| Diameter Standard | Mil-Spec |
| Type | Carbine Receiver Extension (Buffer Tube) |
| Positions | 6-Position |
| Compatibility | AR-15 Mil-Spec Collapsible Stocks |
| Threading | Pre-Threaded |
| 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 inches) and a straight profile, while commercial tubes are slightly larger (approximately 1.17 inches) and have an angled rear. Mil-spec tubes are generally considered the industry standard and are required for mil-spec collapsible stocks. Always verify your stock's required tube diameter before purchasing to ensure proper fit.
Will this buffer tube work with my existing AR-15 lower receiver?
Yes — this LBE Unlimited buffer tube is pre-threaded to the standard AR-15 lower receiver thread specification (1-3/16 x 16 TPI), making it compatible with the vast majority of mil-spec AR-15 lower receivers. It pairs with any collapsible stock designed for a mil-spec diameter tube. Note that a carbine buffer and carbine recoil spring (sold separately) are required to complete the assembly.
Does this buffer tube come with a buffer and spring, or just the tube?
This listing includes the mil-spec buffer tube only. A compatible carbine buffer and carbine recoil spring are not included and must be purchased separately. If you're building from scratch, be sure to source a carbine-length buffer and spring rated for your specific AR-15 configuration — standard carbine, heavy, or H2/H3 — depending on your gas system and bolt carrier group setup.
