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80LowerJig.com: 80% Lowers, Jigs, Build Kits & More!

80% Lower Jig

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80% Lower Jig

You’ve found the #1 source for the 80 lower jig! We have a huge selection from top manufacturers like 5D Tactical, Easy Jig, Polymer 80, and much more. Our jigs are all 100% made in the USA and are 100% compatible with all these 80% lower options!

Guaranteed precision

All the jigs we sell are designed for the AR-15, LR-308, and the new AR9 platform. Every jig guarantees your lower will be cut and drilled to the specifications required for reliable functionality. Each 80 lower jig is easy to use and requires less than two hours of work to set up and use!

Build more ARs and save cash doing it!

Every jig we well is made in the USA and features hardened metal surfaces for worry-free milling and drilling. The best part? Each 80 lower jig is reusable. This allows you to save serious cash in the long run by making your own lowers for every black rifle or pistol you build!

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 in all 50 states according to the ATF. Your finished lower will be a functional firearm, but it won’t require any FFL paperwork, transfer fees, or background check.

Please check your local and state laws before building an 80% lower or any other firearm at home. 

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

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