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  • Forged AR15 80% Lower Fire/Safe Marked (1-pack) Forged AR15 80% Lower Fire/Safe Marked (1-pack) Forged AR15 80% Lower Fire/Safe Marked (1-pack)

    80% Lower Fire/Safe Marked (1-pack)

    (1) Black Fire/Safe Marked AR15 Forged 80% Lower Receiver: For AR-15 builds (5.56/.223/300 BLK/6.5 Grendel) Color: Anodized Black Type III Hard Anodized 100% Mil-Spec Quantity: 1 Fire/Safe Marked: Yes Forged 7075-T6 Aluminum Broached Magwell 100% Made...

    $84.99
  • Sale
    Hybrid 80 Liberator AR15 80% Lower and Jig Hybrid 80 Liberator AR15 80% Lower and Jig 2

    Hybrid 80 Liberator AR15 80% Lower and Jig - Black

    One of the coolest things about the industry's evolution is that now you're no longer restricted to simply purchasing an AR at your local gun shop. Plus, if you get any sort of mind to upgrade, mod, or swap out parts after you buy it, well, you're stuck...

    $69.99 - $89.99
  • .308 80% Lower Fire/Safe Marked (1-pack) .308 80% Lower Fire/Safe Marked (1-pack) .308 80% Lower Fire/Safe Marked (1-pack) .308 80% Lower Fire/Safe Marked (1-pack) .308 80% Lower Fire/Safe Marked (1-pack)

    .308 80% Lower Fire/Safe Marked (1-pack)

    (1) Black Fire/Safe Marked Billet .308 80% Lower Receiver: Platform: .308 Color: Anodized Black Type III Hard Anodized Billet DPMS Gen 1 Quantity: 1 Fire/Safe Marked: Yes Threaded Bolt Catch Hole (threaded pin included) Billet 6061-T6...

    $139.99
  • Sale
    jmt-ar-15-80-gen-2-polymer-lower-with-jig-black-1 jmt-ar-15-80-gen-2-polymer-lower-with-jig-black-2 jmt-ar-15-80-gen-2-polymer-lower-with-jig-black-3 jmt-ar-15-80-gen-2-polymer-lower-with-jig-black-4 jmt-ar-15-80-gen-2-polymer-lower-with-jig-black-5

    JMT AR-15 80% Gen 2 Polymer Lower with Jig - Black

    Worried that a polymer lower receiver isn’t up to the task of handling your AR’s constant abuse? We’re excited to bring in the new Gen 2 Polymer 80% Lower from James Madison Tactical! This ultralight JMT lower includes the necessary 80%...

    Was: $89.99
    Now: $79.99
  • Sale
    jmt-308-80-gen-2-polymer-lower-with-jig-black-1 jmt-308-80-gen-2-polymer-lower-with-jig-black-2 jmt-308-80-gen-2-polymer-lower-with-jig-black-3 jmt-308-80-gen-2-polymer-lower-with-jig-black-4 jmt-308-80-gen-2-polymer-lower-with-jig-black-5

    JMT 308 80% Gen 2 Polymer Lower with Jig - Black

    That new LR-308 rifle or AR-10 clone doesn’t need to weigh close to 20 pounds. Between that big barrel, variable-zoom optic, bipod, and bench-ready Magpul buttstock, you’re already tipping the scales. To shave critical weight, try out James...

    Was: $109.99
    Now: $99.99
  • AR-9 80% Billet Lower - 9mm, (1-pack) AR-9 80% Billet Lower - 9mm, (1-pack) 2 AR-9 80% Billet Lower - 9mm, (1-pack) 3 AR-9 80% Billet Lower - 9mm, (1-pack) 4

    AR-9 80% Billet Lower - 9mm, (1-pack)

    Introducing the first of its kind 9MM AR 80% Lower Receiver. This AR-9 80% lower receiver is made for the 9mm caliber. Manufactured from 6061-T6 billet aluminum, this receiver's precision-cut using CNC. It features Type III hard coat anodizing and...

    $139.99
  • jmt-ar-15-80-gen-2-polymer-lower-with-jig-fde-1 jmt-ar-15-80-gen-2-polymer-lower-with-jig-fde-2 jmt-ar-15-80-gen-2-polymer-lower-with-jig-fde-3 jmt-ar-15-80-gen-2-polymer-lower-with-jig-fde-4 jmt-ar-15-80-gen-2-polymer-lower-with-jig-fde-5

    JMT AR-15 80% Gen 2 Polymer Lower with Jig - FDE

    Now available in Flat Dark Earth (FDE), James Madison Tactical’s new Gen 2 Polymer 80% Lower Receiver ships with the included 80% jig for drilling your hammer, trigger, and safety lever, and cutting the fire control cavity for the...

    $79.99
  • 80% Lower Patriot Pack 80% Lower Patriot Pack 2 80% Lower Patriot Pack 3 80% Lower Patriot Pack 4 80% Lower Patriot Pack 5

    80% Lower Patriot Pack

    Which of your planned builds should you start on first? You got the AR-15, the staple of any gun owner's long gun collection. You got the .308, used for punching paper and slamming steel at ridiculous range. And you got the AR-9, the niche little guy...

    $329.99
  • jmt-308-80-gen-2-polymer-lower-with-jig-fde-1 jmt-308-80-gen-2-polymer-lower-with-jig-fde-2 jmt-308-80-gen-2-polymer-lower-with-jig-fde-3 jmt-308-80-gen-2-polymer-lower-with-jig-fde-4 jmt-308-80-gen-2-polymer-lower-with-jig-fde-5

    JMT 308 80% Gen 2 Polymer Lower with Jig - FDE

    That new LR-308 rifle doesn’t need to weigh close to 20 pounds. Between that big barrel, variable-zoom optic, bipod, and bench-ready Magpul buttstock, you’re already tipping the scales. To shave critical weight, try out James Madison...

    $99.99
  • JMT 80% Lower and Jig - .308, Polymer, Green JMT 80% Lower and Jig - .308, Polymer, Green-2 JMT 80% Lower and Jig - .308, Polymer, Green-3 JMT 80% Lower and Jig - .308, Polymer, Green-4 JMT 80% Lower and Jig - .308, Polymer, Green-5

    JMT 80% Lower and Jig - .308, Polymer, Green

    The LR-308 rifle or AR-10 clone you just built doesn’t need to weigh close to 20 pounds. Between that big barrel, variable-zoom optic, bipod, and bench-ready Magpul buttstock, you’re already tipping the scales. To shave the ounces off your...

    $89.99
  • 80% Lower (1-pack) - Blemished

    80% Lower (1-pack) - Blemished

    (1) Blemished Black 80% Lower Receiver: This receiver is blemished. Marks will vary.  The lower receiver is fully functional once fabricated, just like any unblemished 80% lower. This is a NON-REFUNDABLE product. These blems may or may not be...

    $79.99
  • Polymer80 80% Lower Receiver and Jig Kit (AR-15) - FDE

    Polymer80 80% Lower Receiver and Jig Kit (AR-15) - FDE

    Polymer80 has introduced their new polymer 80% lower in Flat Dark Earth! This ultralight 80% lower is the perfect way to complete an AR-15 build, be it a rifle, pistol, or SBR. Weighing less than half a pound, the G150 Phoenix FDE 80% lower is currently...

    $99.99
  • Polymer80 80% Lower Receiver and Jig Kit (LR-308) Polymer80 80% Lower Receiver  (LR-308) Polymer 80 80% Lower Receiver  (LR-308) Polymer80 80% Lower Receiver  (LR-308) Polymer 80 80% Lower Receiver  (LR-308)

    Polymer80 80% Lower Receiver and Jig Kit (LR-308)

    Polymer80 has attacked the AR-10 80% lower with a new, ultralight approach! Introducing the Warrhogg .308 AR-10 Polymer 80% lower, the world’s lightest DPMS-platform .308 lower on the market. This new contender addresses a big problem for...

    $124.99
  • .308 80% Lower Fire/Safe Marked Raw (1-pack) .308 80% Lower Fire/Safe Marked Raw (1-pack)-2 .308 80% Lower Fire/Safe Marked Raw (1-pack)-3 .308 80% Lower Fire/Safe Marked Raw (1-pack)-4 .308 80% Lower Fire/Safe Marked Raw (1-pack)-5

    .308 80% Lower Fire/Safe Marked Raw (1-pack)

    (1) Raw Fire/Safe Marked Billet .308 80% Lower Receiver: Platform: .308 Color: Raw – no anodization DPMS Gen 1 Quantity: 1 Fire/Safe Marked: Yes Billet 6061-T6 Aluminum Broached Magwell Enhanced, heavy duty trigger guard 100% Made in the...

    $109.99
  • budget-80-lower-billet-1-pack-1 budget-80-lower-billet-1-pack-2 budget-80-lower-billet-1-pack-3 budget-80-lower-billet-1-pack-4 budget-80-lower-billet-1-pack-5

    80% Lower Billet (1-pack)

    Start a great AR build without breaking the bank. Check out this 80% billet lower receiver from JL Billet! It's been created to conform to mil-spec dimensions, so you can bet it's compatible with whatever you plan to add onto your build. On top of that,...

    $119.99
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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. 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.

Do 80% Lowers Require a License or FFL?

No. The Gun Control Act of 1968 says building a firearm for personal use without a license or paperwork is perfectly legal. The ATF also says 80% lowers are legal and aren’t considered firearms. So, you’re not subject to the same rules and restrictions when buying, shipping, owning, or building an 80 lower or other type of receiver blank.

These same rules apply to all receiver blanks, frame blanks, and build kits we sell at 80-Lower.com. 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 80-Lower.com, 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.