JSD 80% Lower Receivers, Jigs, and Gun Parts Kits

Find the parts and tools you need here at JSD supply.

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Drill into your next 80 lower

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How to Finish an 80 Percent Lower Receiver as a Functional Firearm

 To finish an 80% lower precisely, you’ll need a drill press or power drill, a router jig, a vise, and other components included in the gun parts kit.

80 percent lowers are manufactured solid in key areas to ensure quality and meet legal obligations. Guided by one of our completion jigs, you’ll drill out the space for the firing mechanisms and other vital components. The amount of drilling needed will depend on the model and type of firearm you are preparing. Once the receiver has been prepared, follow instructions for assembly. It’s a great chance to see the ins and outs of your gun and learn how everything works.

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Why Build Your Own Gun?

With any other guns, you go to the gun store, fill out a bunch of forms. They’ll run a background check, and depending on your state, you could wait awhile.

With JSD Supply, you’ll have the 80 percent lower receiver and all the parts you need to take part in this great American pastime. Buy from a supplier that respects your privacy and can actually help you protect it.

Is it Legal?

Absolutely. It is legal to build your own firearm for personal use in most US States so long as you can legally own a firearm. Always check local laws for your area. Rhode Island and New Jersey recently passed laws that may restrict the purchase or assembly of unserialized firearms.

80 percent lower receivers are parts manufactured and do not fall under the legal definition of a firearm by the Bureau of Alcohol, Tobacco, and Firearms (ATF).

Some US States have additional regulations for firearms once they are completed, including California, Rhode Island, and New Jersey. Be sure to identify and comply with all local laws prior to your purchase.

Why Source with JSD Supply?

JSD is the home of quality gun parts and kits. We know they work because we use them. And if they don’t work for you, we’ll refund or replace them. It’s that simple.

We’re here to support you through the ultimate DIY project. All products are guaranteed, and we have some of the quickest shipping times in the industry. Start with just the parts you’re looking for here with us online, or order a complete build kit for all the parts and tools you’ll need from start to finish.

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