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  • Elite Builder 80% Lower Jig - AR15/AR91 Elite Builder 80% Lower Jig - AR15/AR9 2 Elite Builder 80% Lower Jig - AR15/AR9 3 Elite Builder 80% Lower Jig - AR15/AR9 4 Elite Builder 80% Lower Jig - AR15/AR9 5

    Elite Builder 80% Lower Jig - AR15/AR9

    This Elite Builder 80% Lower Jig is compatible with our Forged 80% Lowers and our Premium Fire/Safe Marked Billet 80% Lowers! Other manufacturers' billet 80% lowers may be compatible with the Elite Builder 80% lower jig, provided their lower...

    $149.99 - $169.98
  • Broken Arms 80% Lower Jig - AR15/AR9 (With Tooling) Broken Arms 80% Lower Jig - AR15/AR9 (With Tooling) 2 Broken Arms 80% Lower Jig - AR15/AR9 (With Tooling) 3 Broken Arms 80% Lower Jig - AR15/AR9 (With Tooling) 4 Broken Arms 80% Lower Jig - AR15/AR9 (With Tooling) 5

    Broken Arms 80% Lower Jig - AR15/AR9 (With Tooling)

    You love to build guns. You’ve heard about building an AR from scratch using little more than a drill press. This is the toolkit to get it done: The Broken Arms 80% Jig is designed to eliminate the need for any sort of expensive equipment like a...

    $279.99
  • The Elite Builder Patriot 80% Lower Jig - AR9/AR10/AR15 The Elite Builder Patriot 80% Lower Jig - AR9/AR10/AR15 (With Tooling) The Elite Builder Patriot 80% Lower Jig - AR9/AR10/AR15 (With Tooling) The Elite Builder Patriot 80% Lower Jig - AR9/AR10/AR15 (With Tooling) The Elite Builder Patriot 80% Lower Jig - AR9/AR10/AR15 (With Tooling)

    The Elite Builder Patriot 80% Lower Jig - AR9/AR10/AR15

    The Elite Builder became one of the most popular jigs when it comes to fabricating a 5.56 or 9mm 80% lower. Now, The Elite Builder Patriot Jig can complete virtually all the AR platforms' 80% lowers! We included new template plates so the jig can also...

    $169.98 - $189.97
  • LJ's AR15 80% Lower Jig LJ's AR15 80% Lower Jig  Tooling LJ's AR15 80% Lower Jig  Tooling LJ's AR15 80% Lower Jig LJ's AR15 80% Lower Jig

    Liberty 80% Lower Jig (AR-15/AR-9)

    You love to build guns. You’ve heard about building an AR from scratch using little more than a drill press. This is the toolkit to get it done: The Liberty AR-15 Jig is designed to eliminate the need for expensive equipment like a router or mill...

    $99.99 - $199.99
  • Elite Builder 80% Lower Jig - AR10/.308 1 Elite Builder 80% Lower Jig - AR10/.308 2 Elite Builder 80% Lower Jig - AR10/.308 3 Elite Builder 80% Lower Jig - AR10/.308 4 Elite Builder 80% Lower Jig - AR10/.308 5

    Elite Builder 80% Lower Jig - AR10/.308

    The .308 AR is a precision rifle, and building one means investing in precision gunsmithing equipment -- but you don’t need to spend a fortune. The Elite Builder .308 80% Jig is designed for the LR-308 platform (often called AR-10 by shooters) and...

    $159.99 - $179.98
  • Elite Builder 80% Lower Jig - AR-10 Patriot Upgrade

    Elite Builder 80% Lower Jig - AR-10 Patriot Upgrade

    These extra machining plates will transform your AR-15/AR9 Elite Builder Jig into the Elite Builder Patriot 80% Lower Jig. The Patriot setup works with our AR-10 / LR-308 80% lower receivers, too. If you want to invest in a new .308 or 6.5 Creedmoor...

    $89.99
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An 80% lower jig is the only way for an AR-15 builder to complete their 80 percent lower receiver with accurately drilled pin holes, and a properly milled fire control cavity for the trigger, hammer, and other components. Since, by design, an 80% lower still requires the builder to complete the last 20% of the milling process to make the receiver functional, an 80% jig removes the need for making complex calculations or programming a CNC machine.

How an 80% Jig Works

Instead, the 80 percent lower jig provides pre-designed cutting and milling templates to be used in tandem with a drill press or mini-mill. Each jig also comes with "template" plates that provide guides holes for drilling the pin holes for the lower parts kit:

80-percent-jig-cutting-and-drilling-template-plates.jpg

Most AR 80% receiver jigs (like the Elite Builder's jig plates shown above) are made from high-strength steel or aerospace-grade aluminum alloy, so they can be reused to complete several 80 percent lowers. Our store carries both AR15 Jigs and AR-10 Jigs for 5.56 NATO and .308 Winchester builds. They are designed with safeguards in place so that you do not drill too deep or mill out more than necessary. Also included are the required drill bits for the pin holes, and end mill bits for cutting inside the receiver.

Not sure which jig is right for you? Here's the guide on all 80% jigs.

Ready to fabricate? Here's how to mill a lower with a drill press.

No Experience Necessary

While the actual milling process takes some attention-to-detail, it is a fairly straightforward process and all our 80 lower jigs come complete with easy step-by-step instructions. Also, the individual components of each jig are clearly labeled for tooling and measurements and coordinate with the instructions to ensure your AR-15's finished receiver is a strong and sound success!

Benefits of an 80 Lower Jig:

  • No FFL required
  • Allows for easy cutting and drilling of receiver
  • Comes complete with step-by-step instructions
  • Can be reused to complete multiple 80% lower receivers
  • Easy to use for beginner gunsmiths and builders
  • Made in the USA

Builders' FAQ

What other tools do I need to complete my 80% lower?

Besides the jig, all you need is a basic drill press or mini-mill, a tabletop vise, and some machining oil. The 80 percent lower jigs for all weapon platforms come with the required drill bits and end mill bits. Polymer-receiver jigs and certain pistol jigs may instead require hand files, a handheld drill, snips, or a Dremel to complete the corresponding 80% frame.

This guide covers all tools (required and recommended) in detail.

Do I need a special license for this?

No. An 80 lower jig isn't considered firearm and no license is required to buy or own one. The same goes for 80% lower receivers under federal law. Some states have banned or restricted 80% lowers, so check our Shipping & Returns Policy to see which states we cannot ship to, and check your local and state laws before attempting to buy components or build a firearm at home.

Execute the right to bear arms today. Your build awaits you.

 


DISCLAIMER: “GLOCK” is a federally registered trademark of GLOCK, Inc. and is one of many trademarks owned by GLOCK, Inc. and GLOCK Ges.m.b.H. Neither 80% Lowers, a/k/a Tactical Gear Heads, LLC nor this site are affiliated in any manner with, or otherwise endorsed by, GLOCK, Inc. or GLOCK Ges.m.b.H. The use of “GLOCK” on this page is merely to advertise the sale of GLOCK pistols, parts, or components. For additional genuine GLOCK, Inc. and GLOCK Ges.m.b.H products and parts visit www.glock.com.

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.