AR15 Carbine Buffer Tube: 6-Position Mil-Spec 7075-T6
The AR15 Carbine Buffer Tube is machined from 7075-T6 aluminum and finished with a thin film lubricant to support smooth spring, buffer, and carrier travel. As a 6-position mil-spec tube, it provides the mounting platform for a collapsible carbine stock or pistol brace, making it a common starting point for builders assembling an AR-15 lower receiver.
Because it follows mil-spec dimensions, it is intended to pair with mil-spec stocks and braces rather than commercial-diameter hardware. Complete the receiver extension with a matched AR15 carbine buffer and recoil spring, and confirm castle nut and end plate fitment during assembly.
Keep small parts on hand with a steel castle nut five pack, or browse related buffer parts to round out your build. Proudly made in the USA.
Specifications
| Material | 7075-T6 Aluminum |
| Positions | 6-Position |
| Specification | Mil-Spec Dimensions |
| Finish | Hard Coat Anodized, Thin Film Lubed |
| Weight | 3.8 ounces |
| Compatibility | Standard AR15 Lower Receivers, Mil-Spec Stocks/Braces |
| Origin | Made in the USA |
Frequently Asked Questions
It is machined from 7075-T6 aluminum and finished with hard coat anodizing plus a thin film lubricant to support smooth spring, buffer, and carrier travel. It is a 6-position tube built to mil-spec dimensions and weighs 3.8 ounces. Proudly made in the USA.
It is compatible with standard AR15 lower receivers and mil-spec stocks and braces. Because it follows mil-spec dimensions, it is intended to pair with mil-spec hardware rather than commercial-diameter stocks. Confirm your stock or brace is mil-spec before ordering.
No. This listing is for the 6-position buffer tube only. To complete the receiver extension, add a matched AR15 carbine buffer and recoil spring, and confirm castle nut and end plate fitment during assembly.
You'll want a castle nut and end plate to secure the tube during assembly. Keep spares on hand with a steel castle nut five pack, or browse related buffer parts to round out your build.
Orders ship in 2-3 business days, and free shipping is available on qualifying orders. The buffer tube is also backed by a 30-day money-back guarantee. Check the product page for current availability before ordering.