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29 of 29 Items

Every 80 percent lower we sell is proudly made in the U.S.A. from quality billet aluminum (6061-T6), mil-spec forged aluminum (7075-T6), or weapons-grade polymer.

Brand new builder? This guide compares every available 80% lower.

What is an 80% Lower Receiver?

Officially called a “receiver blank” by the Bureau of Alcohol, Tobacco, and firearms (ATF), an 80% lower is an unfinished receiver that isn’t considered a firearm under federal law. Cutting and drilling the lower at home with hand tools turns it into a ready-to-build firearm by legal definition. Whether it’s an AR-15 80 lower, AR-10 80 lower, 1911 frame, or a polymer 80% pistol frame, thousands of shooters have built reliable and accurate rifles and pistols with our units.

80% Lowers: State Laws 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).

How Do I Complete an 80% lower?

Completing a polymer or metal lower requires no experience and usually takes less than two hours. All you’ll need to get the job done is an 80% lower jig. All available jigs include the necessary instructions, tools, and bits. There are four steps required:

  1. Cut the cavity for the lower parts kit
  2. Drill the hammer pin hole
  3. Drill the trigger pin hole
  4. Drill the safety lever hole

Need help? Read The Instructional Guide: How to Complete an 80% Lower

Finished? Here's How to Install the AR-15 Lower Parts Kit.

Need more help? Our FAQ covers it all.

Once you complete your lower, you can install a buffer assembly, lower parts kit, and pre-built upper receiver. Then you’re ready to hit the range! Completing an 80% frame for a Glock®-compatible handgun or 1911 is no different. Just drill the pin holes, cut the slide rails, and cut the barrel seat. The pistol jig instructions will tell you exactly what to do, and how. Order a build kit and purchase an 80% lower, and you can go from a bunch of parts to a functional AR rifle or pistol, 1911, or handgun in a single afternoon.

Execute the right to bear arms today. Your build awaits!

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.