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AR9 80% Lower - 9mm - Billet (1-pack)

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Introducing the dedicated 9MM (AR-9) 80% Lower Receiver.

This AR-9 80% lower receiver is made for the 9mm caliber. Manufactured from 6061-T6 billet aluminum, this receiver's precision-cut using CNC. It features Type III hard coat anodizing and enlarged mag well ramps for competition shooters. Most importantly, it’s compatible with Glock 9mm magazines.

AR-9 80% Lower Receiver Specs:

  • Compatible with Glock magazines
  • Type III Hard anodized (mil-spec)
  • 6061-T6 billet aluminum construction
  • "FIRE/SAFE"-engraved for safety lever
  • Competition mag well for fast reloads
  • Enhanced, heavy-duty trigger guard
  • Threaded bolt catch hole (threaded pin included)
  • 100% Made in the USA

How to Finish Your AR-9 80% Lower

Cutting and drilling your 80% lower to make it functional requires an AR-15/AR9 jig. We recommend the Elite Builder Jig, available here -- it's capable of finishing all three lowers included in this bundle. Follow these detailed, step-by-step instructions to fabricate your 80% lower using the Elite Builder Jig.

Assembling Your AR-9 Lower

Once your lower is fabricated, it's time to assemble it. You'll need a lower parts kit, available here, and a buffer tube kit. Please note, the AR9 lower uses an AR-15 lower parts kit. Follow our step-by-step picture guide for installing your lower parts kit and buffer assembly.


WARNING: Handling firearms parts and accessories can expose you to lead and other petroleum products known to the State of California to cause cancer and reproductive harm. For more information go to: www.P65Warnings.ca.gov

Shipping Restrictions

Shipping of various parts and/or accessories are prohibited to states and locales (ie New Jersey, California, New York, etc…) with restrictions against certain parts and/or accessories or "assault weapons" (i.e. states with high-capacity magazine restrictions, manufacturing of semi-automatic weapons, etc..). It is your responsibility to be aware of your local firearms laws before purchasing from our website or machining a firearm. We try our best to keep our shipping page current, but laws change daily.

80-Lower.com only ships within the United States. Federal legislation dictates we cannot ship our products internationally.

Billet 6061-T6 Aluminum

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We are a national retailer of individual components and not all products depicted on this website are legal in every state. Shipping of various products found on this website are prohibited to some states (such as California, Connecticut, District of Columbia, Hawaii, New Jersey, New York, Rhode Island, and Washington). The information, pictures, text or products presented on this website are not a representation by us, and should not be understood by you, that any product or completed firearm is legal to assemble or own in your state of residence. We encourage each and every builder to perform their own research about the state and federal laws that apply to them. It is your responsibility to understand the law and we encourage you to consult with an attorney or your local ATF representative.