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AR9 80 Lower Jigs

AR9 80 Lower Jigs

We partnered with the industry's top manufacturers to bring an all-new, proprietary AR9 80% lower receiver to market. This 9MM receiver blank does not require those finnicky "magazine conversions" like you were once required to use with an AR-15 receiver. Instead, this receiver incorporates a custom mag well designed to accept all factory and aftermarket Glock magazines! Pairing your AR9 80% lower with one of our AR9 jigs provides you with the tools required to machine your receiver, making it ready for a lower parts kit, 9mm barreled upper, and buffer system.

AR9 Jig & Receiver Compatibility

The AR9 lower receiver is conveniently sized up to work with virtually all standard AR-15 jigs. Because it utilizes an AR-15 lower parts kit, buffer, and pivot/takedown pins, the cutting and drilling steps required to fabricate the receiver mirror that of the original AR-15 80% lower. We carefully selected the best jigs that perfectly seat the AR9 lower and provide the right tooling to fabricate with confidence and precision. grab the AR9 Elite Builder jig, or the super-affordable Universal RJ556U polymer jig by itself, or pair up the Elite Builder with a billet AR9 receiver in one order!

AR9 80% Jig: What's Included

  • (2) Side plates
  • (3) Top plate templates
  • (1) Set of HSS drill bits
  • (1) HSS end mill bit (center-cut)

This guide illustrates the required steps. An AR-15 receiver is pictured, but steps are the same for an AR9 receiver.

Each AR9 Jig includes the jig plates and templates required for securing, cutting, and drilling the receiver blank. The side plates include pre-drilled template holes for completing the trigger, hammer, and safer selector lever pin holes. The top plates indicate where to drill pilot holes and they guide your end mill bit for completing the fire control cavity for the trigger, safety, and hammer install.

You'll need some basic tools to operate the jig:

  • *Drill press
  • Table-top vise
  • Cutting fluid

*While other jigs on the market require a router or milling machine, the Elite Builder's HSS end mill bit is designed to allow you to cut the fire control cavity with plunge cuts, vertical cuts made with the end mill in similar fashion as drilling the cavity's pilot holes. This is easily accomplished using a cross-slide vise that affords lateral movement. With a cross-slide and press, you can complete your receiver blank in under two hours.

State Laws May Vary

Contrary to federal law, some states have either restricted or banned the sale, transfer, and ownership of 80% lowers, firearm blanks, and other gun parts. Because of these restrictions, we cannot ship our products to certain states. Please confirm whether your state is restricted on our Shipping & Return Policy before placing an order. We cannot fulfill orders to restricted states if placed.


DISCLAIMER: If you are new to the world of DIY gun building, you likely have a lot of questions and rightfully so. It’s an area that has a lot of questions that, without the correct answers, could have some serious implications. At 80-lower.com, we are by no means providing this content on our website to serve as legal advice or legal counsel. We encourage each and every builder to perform their own research around their respective State laws as well as educating themselves on the Federal laws. When performing your own research, please be sure that you are getting your information from a reliable source.

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.