Geissele Automatics Premium Mil-Spec AR-15 Buffer Tube – Black


The Geissele Automatics premium grade MIL-SPEC AR-15 buffer tube, built from the ground up to meet or exceed military specifications. Precision machined from quality 7075-T6 aluminum, this heavy duty 6-position receiver extension is fully compatible with your favorite MIL-SPEC-diameter carbine stocks.

Only 2 left in stock

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Frequently Bought Together

Price for both: Original price was: $94.94.Current price is: $85.45.

Topped off with a tough black Color Type III hardcoat anodized finish, the Premium MIL-SPEC buffer tube is a great option for your next build. It even includes a castle nut and end plate!


  • 6-Position receiver extension
  • AR-15 / AR-308 compatible
  • MIL-SPEC diameter
  • Heavy duty 7075-T6 aluminum construction
  • Hardcoat anodized Black Color finish
  • Weighs just 3.7 Oz
  • Includes MIL-SPEC castle nut and end plate

The Geissele Premium Mil-Spec Buffer Tube is machined from quality 7075-T6 Aluminum and finished in Type 3 Hardcoat Anodized.  This rigid and durable buffer tube conforms to all mil-spec standards and features 6 stock positions. This carbine length and mil-spec diameter Premium Buffer Tube is made in the USA and weighs in at 3.7oz, making it the perfect fit for your AR-15 lower and ensuring compatibility with most mil-spec diameter quality AR-15 stocks. Included in the package is a high-quality, mil-spec castle nut and end plate.


You will notice that some of these will have wildly different shades of colored anodizing, and they look wildly different depending on the light source! Why would we even consider selling parts like this?  The answer is there is absolutely nothing we can do to make colored anodizing consistent for the superior type of anodize we use.

NOTE: In the images above you will find a collection of these parts to show you a range of what you may receive.  Also shown are images of the same exact parts taken under different light sources.

Additional information

Weight 1 lbs
Dimensions 12 × 4 × 3 in


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