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13 of 13 Items
13 of 13 Items

The AR15 80 Lower is a crucial part of any AR15 build. An AR15 80% lower receiver provides you, the builder, with an opportunity to build a custom AR-15 rifle or pistol from the ground up, including by fabricating the firearm component (the stripped lower receiver) itself.

What is an AR-15 80% Lower?

When it comes to building an AR-15, only the stripped lower receiver is considered the firearm. This is the component you normally purchase from an FFL. An AR-15 80% lower is an unfinished stripped lower receiver that is not considered a firearm under federal law. That means you can purchase it directly, with no FFL, serial number, or paperwork required*. You must then fabricate your unfinished lower to make it a functional firearm. Then you can then assemble your lower into a finished AR-15 by purchasing an upper assembly and lower parts kit, or grab a complete AR build kit.

*State laws vary. Some states require all firearms to be serialized. Some states have banned 80% lowers.

AR15 80 Lowers Work With All AR Parts

There are countless AR-15 parts manufacturers on the market today. Like any stripped lower receiver, a fabricated AR-15 80% lower is compatible with all standard AR parts. They work with standard AR-15 uppers, lower parts kits, buffers and buffer tubes, and all other AR parts and accessories.

Ready to assemble your finished 80% lower? Here's how to install your lower parts kit.

State Laws May Vary

Some states have banned 80% lowers and certain firearm parts, or have otherwise restricted the sale and ownership of products we sell. So, be sure to check your local and state laws. We can’t ship our products to certain states. Please check our Shipping & Return Policy before placing an order (see restrictions).

Your custom AR-15 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, 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.

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.