Whether you just bought an AR15 kit with an included 80% lower or you're piecing together a custom AR rifle or pistol and starting with a forged or billet AR15 receiver blank, the AR15 jig is the one tool you need to turn that "not-a-gun" 80% lower into a finished stripped receiver that's ready for a parts kit. We partnered with top gunsmiths and American makers to bring easy-to-use, rugged 80% jigs to the AR15 market so amateur builders and new shooters with no experience can build your first or next gun truly from scratch.
No Gunsmithing Experience Needed
The AR15 jig provides the measurements for cutting your 80% lower's fire control cavity, where the trigger, hammer, and parts kit will install. Each jig also includes side plates that secure the receiver for machining via its exterior walls. Those plates providing pre-drilled template holes for where you'll drill the pin holes for the trigger, hammer, and disconnector. These features remove virtually all the measuring and calculations required. All you do is secure the jig in a vise, power up the drill press or mini-mill, and let the jig guide the included bits for cutting and drilling.
AR-15 Lower Receiver Compatibility
With the receiver blank market in full swing, various manufacturers have developed a plethora of new 80% lowers. In addition to our own billet and forged units, polymer receivers now exist for building an ultra-light AR15. We've partnered with those makers to provide polymer 80% lower-and-jig combos (like the JMT "Magpul-style" lower and Polymer80 RJ556U) that are incredibly easy to machine, and they're super-affordable.
Forged vs. billet fitment: Some metal AR15 jigs will only work with a forged receiver blank. The billet receiver blanks feature different exterior shapes which do not allow for some jigs to properly seat against the receiver's exterior walls. Simply verify compatibility with your chosen 80% lower on the product page when ordering your jig.
AR15 Jig Features
- NO FFL Required
- Metal jigs are reusable (20+ receivers)
- Polymer jigs include their own 80% lower
- Jigs come with step-by-step instructions
- Video tutorials available online
- All jigs are made in the USA
Execute the right to bear arms today. Your build awaits you.
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.