cc-settings-icon BUILD AT HOME
80% Arms sells AR-15 and .308 80% Lower Receivers, 80% Lower Jigs and other accessories which allow you to legally build a firearm at home in most states.
We utilize state of the art 5-axis CNC machines to mill all our .308 and AR-15 80 percent lower receivers to incredibly precise tolerances using premium billet aluminum.
We also offer our patented AR-15 and .308 Easy Jigs® which is the first 80% lower jig that makes it ridiculously easy for a non-machinist to finish their 80% lower in under 1 hour with no drill press required.
Products manufactured by 80% Arms carry a lifetime warranty against manufacturing defects. We will promptly replace or repair any product that we determine to be defective.

9mm AR-9 80% Lower Receiver - Glock Compatible - FDE

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We received permission from the Federal Court to sell this item. State Restrictions apply. READ MORE


Looking to build a pistol cartridge rifle? Have extra Glock magazines lying around? Try our Flat Dark Earth Cerakoted AR9 Glock Compatible Lower. 80 Percent Arms’ high-quality lowers are made using industry-leading CNC machines which create very tight tolerances.

Take advantage of the expansive AR15 aftermarket support in a pistol caliber platform. Our AR9s accept any standard parts that are compatible for an AR15 lower receiver!

We manufacture our 80% lower receivers with US-sourced aerospace grade 6061 aluminum. The material is more durable, resistant to corrosion, and yet much easier to mill than any other alloy. Combining our 80% lowers with the Easy Jig® Gen 3 and Freedom Jig Router will set you up for an even smoother and more successful build process.

Can’t decide between an AR15 or AR9? Check out our blog to help you decide!


  • FDE Cerakote

  • CNC Milled 6061 Aluminum Construction

  • Broached/Flared Magwell

  • Glock Magazine Compatible

  • Integrated Trigger Guard

  • Upper/Lower Receiver Tensioner Hole

  • Threaded Bolt Catch Screw Hole

  • Fire/Safe Engraving

  • Completed Rear Takedown Lug Pocket

  • Full Mil Spec Parts Compatibility

  • Includes Bolt Catch Screw Set and Color Matched AR9 Hardware Set

*Please Note: Compatible with Easy Jig® Gen 2 & Gen 3. Not compatible with Easy Jig® Gen 1 or Universal Drill Press Jig. Our 80% AR-9 lowers do not have LRBHO function. Ensure that you purchase an upper receiver that has LRBHO feature built-in. See our blog post here that explains more about LRBHO.

80 Percent Arms strives to provide the highest level of customer service within the 80% and firearm industry as a whole. We support all of our products with a lifetime warranty* so you can build with confidence.

You can always expect prompt and educational information as customer satisfaction is our bread and butter. For any questions or concerns regarding our products, please contact us at either, (949) 354-2767 or message us via our live chat!

For more help and tips, be sure to check out our instructional videos on Odysee.

Shipping Restrictions:

This item is restricted from shipping to the following: California, Colorado, Connecticut, Hawaii, Illinois, Maryland, New Jersey, New York, Oregon, Philadelphia Pennsylvania, Rhode Island, Washington, Washington D.C.