80 Lower Jig
Ready to build a gun from scratch, no FFL required? Build an AR-15, AR-10, 1911, Sig P320, or Glock®-compatible handgun with your own tools and know-how? Then you need an 80% lower jig. This is the tool you'll use to machine your AR's receiver blank or your new handgun's 80% frame.
Fabricating Your Firearm With a Jig
Using a jig to complete your 80% receiver or frame is legal to do under federal, and the ATF confirms this. Neither the jig nor the receiver blank are considered firearms, so you can purchase and legally own both units without having to go through an FFL or gun dealer. No license is required, nor is a background check or paperwork.
New to this project? Start here
Now that you have a basic understanding of the process, you know you need a quality, precise jig for accurately and affordably completing your receiver or frame. We offer 80% jigs that require little to no machining experience and only require basic tools -- a hand drill or drill press, a small vise, and other hand tools -- to successfully cut and drill your new firearm.
How AR-type 80% Jigs Work
All AR-type jigs (whether you're building an AR-15, AR9, or AR-10 in aluminum or polymer) work the same: Two side plates secure the 80% lower and various top plates provide the cutting templates for cutting out the fire control cavity for the trigger, hammer, sear, disconnector, safety lever, and springs. Each side plate also has pre-drilled pin hole guides for drilling the holes required to install your lower parts kit. The AR jigs we sell are designed to work a drill press or mini-mill.
How 80% Frame Jigs Work
With the various 80% handgun kits now available -- 1911, Sig Sauer P320, and Glock®-compatible P80 frames -- the handgun jigs each work a little differently mechanically. The 1911 jig provides a carbide cutting tool for completing the slide rails and barrel seat by hand, while the P320 and Polymer80 jigs provide a template for cutting the frame with a Dremel and cutting wheel. Hand files can be used for final fitment and polishing. All handgun jigs provide pin hole templates for drilling the frames to accept parts kits and trigger components.
Standalone Jigs or Bundles
To make things even more convenient for new builders, we've created various jig-and-lower-or-frame combo kits! Grab one of these combo kits and it'll include the jig and appropriate 80% lower or 80% for your preferred platform. All jigs include the necessary drill bits and end mill bits for completing your receiver or frame, so all you need are hand tools.
Benefits of Using an 80% Jig
- No FFL is required for ownership or use
- Completes a lower or frame in 15 minutes to 1 hour
- Jigs include required drill bits and end mill bits for machining
- All available 80% jigs are compatible with all available lowers and frames
- Options are available for routers or drill presses, no complex machinery required
- Replaceable parts are available so you can keep building more guns!
- All jigs proudly made and assembled in the USA
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.
Your custom firearm build awaits.
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 Percent 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.