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AR9 80% Lower Fire/Safe Marked - 9mm - Billet

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A new AR9 80% Lower Receiver tailored for 9mm rounds

This AR9 80% lower receiver is machined for compatibility with Glock® (G17 and G19) 9mm magazines without the need for conversion blocks. Machined from 6061-T6 billet aluminum using CNC for a precision cut design. It features Type III hardcoat anodizing and enlarged mag well ramps for quick and easy reloads.

AR-9 80% Lower Specifcations

  • Compatibility: 9mm Parabellum
  • Construction: Billet 6061-T6 Aluminum
  • Finish: Type III Hardcoat Anodizing
  • Color: Matte Black
  • Fitment: 100% Mil-Spec
  • Fire/Safe Engraving: Yes
  • Features: Integrated trigger guard, Flared magwell, GLOCK® magazine compatibility
  • 100% Made in The USA

Assembling Your 80% Lower

Once your lower is fabricated, it's time to assemble it. You'll need the following components:

*Although made to chamber 9mm, this lower still uses a standard AR-15 (5.56/.223) lower parts kit and standard AR-15 buffer tube.

Need Help Building? Read Our Guides

Follow our step-by-step picture guide to install your lower parts kit and buffer.

Not sure which parts to pick? Read our Ultimate Guide on How to Build an AR-15.

New to building custom guns? Read our FAQ: What Is An 80% Lower?

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

Billet 6061-T6 Aluminum

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.