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80% Lower Jig

80% Lower Jig

Cutting and drilling an 80% frame or receiver for an AR-15, AR9, or LR-308? You've found the #1 source for 80% jigs! We have a carefully-crafted selection from top manufacturers like Elite Builder, Polymer80, and more. Our jigs are all 100% made in the USA and are compatible with all these 80% lowers. We've also recently partnered with leading 1911 manufacturer Stealth Arms to offer quality, affordable aluminum 1911 80% frames and jigs. Every kit available on our site includes the necessary drill bits and end mill bits to cut and drill your frame or receiver blank, making it ready for assembly and your first range day.

New builder? This guide covers the 80 lower jig and its types.

Gunsmithing at Home, No Experience Required

Using an 80 lower jig to cut and drill your frame blank or receiver blank allows you to easily, precisely, and safely fabricate a legal-by-definition firearm at home. Whether it's an AR-type rifle or pistol, GLOCK-compatible frame or 1911 frame, most blanks can be cut and drilled in less than two hours. Each jig includes easy-to-follow instructions. Review the guides below (by platform) for a better idea of the machining steps involved:

Build More, Spend Less

Unless you purchase a polymer receiver or frame with disposable jig, you can use your 80% jig to complete numerous receiver or frame blanks. With the right tools acquired, building another AR rifle or pistol, or 1911 handgun, is less expensive: You don't need to pay extra taxes and fees at the gun store, and there are no FFL transfer fees to pay for an online purchase. When purchasing a "retail" firearm, functional frame, or stripped receiver, these fees and taxes must be paid each time.

Compared to these retail costs, an 80% unit is less expensive because it does not have to be handled, cataloged, or treated like a firearm with the added cost of visiting an FFL. We get to pass those savings on to you!

No FFL required to buy, ship, own, or build

The 80% lower jig is not regulated nor restricted by any State or Federal regulations or laws. Owning and operating one and completing an 80 percent lower is 100% legal under federal law, according to the ATF. Your finished receiver or frame will be a functional firearm, but it won’t require any FFL paperwork, transfer fees, or background check.

Some states have placed restrictions or bans on fabricating firearms at home in this fashion. Please check your local and state laws before building an 80% lower or any other firearm at home. We developed a reference guide to help you find and research the relevant state and federal laws. If you have questions about building a firearm at home, always consult with a licensed attorney in your state.

Benefits of an 80 Lower Jig:

  • Each includes step-by-step instructions
  • Requires little to no mechanical knowledge
  • Compatible with most compact hand routers
  • Proudly made in the USA with a Lifetime Warranty
  • Reusable and modular – replacement parts available!
  • An affordable way to build quality AR-15 lowers repeatedly


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.