The Geissele Premium Mil-Spec Buffer Tube (brand part no. 08-162B) is a precision-machined receiver extension built to mil-spec diameter, giving AR-15 builders a Geissele-quality foundation for any collapsible mil-spec stock. It carries the same tight-tolerance machining Geissele applies across its trigger and upper receiver lines. Because it’s cut to mil-spec dimensions rather than a proprietary or commercial-spec diameter, it’s compatible with the wide range of mil-spec stocks already on the market.

Key Specifications

• Machined to Mil-Spec receiver extension dimensions.
• Compatible with the wide range of mil-spec collapsible stocks on the market.
• Machined from 7075-T6 aluminum with a Type III hardcoat anodized black finish.
• Includes a matching castle nut and end plate.
• Machined with 6 position-adjustment notches.
• Made in the USA.

Frequently Asked Questions

What stocks does this buffer tube fit? Any mil-spec collapsible AR-15 stock, since it’s machined to mil-spec diameter.

Is this a commercial-spec or mil-spec tube? Mil-spec, matching the diameter used by most aftermarket collapsible stocks.

Buy the Geissele Premium Mil-Spec Buffer Tube

Build on a precision-machined receiver extension that gives any collapsible mil-spec stock a solid foundation. Order it from our Geissele Automatics lineup, part of our AR buffer system selection, at our Lubbock, Texas gun shop as soon as it’s ready to ship.