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

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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. It uses simple, tough-as-Hell machining templates that allow you to fabricate the AR-15's forged or billet 80% lowers with nothing more than a drill press and vise. Of course, it does work just fine with any mill if you've got the equipment.

PLEASE NOTE: Tooling for this jig is optional. You'll need to select whether you would like accompanying tooling with your jig.

How the Liberty 80% Jig Works

The Liberty 80 Lower Jig takes a largely vertical approach to cutting your AR-15's receiver for the lower parts kit. Using the provided drill bits, you’ll first remove a large portion of aluminum from inside the main fire control cavity by drilling various pilot holes. Quick and easy. The jig tells you how far down to drill. All you need to do is control the press.

You’ll then use the end mill bits for light cutting and cleaning up the receiver’s walls before cutting a hole for the trigger. Lastly, reinforced drill bushings on the right side plate ensure your hammer, trigger, and safety pin holes are drilled perfectly through the receiver. No measurements required for these. Then you're done! The whole process takes about 1 to 2 hours for first-timers.

See the manufacturer's instructions here.

It’s All in The Bits

The secret to the Liberty 80 Lower Jig isn’t just the plates, templates, and guides. The included bits are made from quality high-speed steel (HSS). These are commercial-grade bits that can eat through forged or billet aluminum in seconds, making fabricating multiple receivers as quick as it is simple.

What’s Included

  • (2) Side plates with drill bushings
  • (5) Template plates for fabrication
  • (1) Instruction manual
  • (1) Set of drill bits (selectable option)
  • (1) Set of end mill bits (selectable option)

What’s Required

  • Drill Press
  • Drilling Vise
  • Machining Oil
  • Eye Protection
  • Ear Protection

With your receiver fabricated, you can install a lower parts kit and buttstock or brace, throw on an upper receiver of your choice, and hit the range in one day.

Shipping Restrictions

Shipping of various parts and/or accessories are prohibited to states and locales (ie New Jersey, California, New York, etc…) with restrictions against certain parts and/or accessories or “assault weapons” (i.e. states with high-capacity magazine restrictions, manufacturing of semi-automatic weapons, etc..). It is your responsibility to be aware of your local firearms laws before purchasing from our website or machining a firearm. We try our best to keep our shipping page current, but laws change daily

80-Lower.com only ships within the United States. Federal legislation dictates we cannot ship our products internationally.

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.