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  • Premium 80% Lower Fire/Safe Marked Billet (1-pack) 1 Premium 80% Lower Fire/Safe Marked Billet (1-pack) 2 Premium 80% Lower Fire/Safe Marked Billet (1-pack) 3 Premium 80% Lower Fire/Safe Marked Billet (1-pack) 4 Premium 80% Lower Fire/Safe Marked Billet (1-pack) 5

    Premium 80% Lower Fire/Safe Marked - Billet

    Our Premium Billet 80% Lower has been redesigned with easier assembly in mind. This receiver has been enhanced with a threaded bolt catch release hole, as well as a threaded rear takedown detent hole. No more roll pins and loose springs! These...

    $89.99
  • Sale
    AR-9 80% Billet Lower - 9mm, (1-pack) 1 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

    AR9 80% Lower Fire/Safe Marked - 9mm - Billet

    Introducing the dedicated 9MM 80% Lower Receiver This AR-9 80% lower receiver is made for the 9mm cartridge, no conversion blocks required! Manufactured from 6061-T6 billet aluminum, this receiver's precision-cut using CNC. It features Type III hardcoat...

    Was: $119.99
    Now: $99.99
  • Premium 80% Lower Fire/Safe Marked Billet Raw (1-pack) 1 Premium 80% Lower Fire/Safe Marked Billet Raw (1-pack) 2 Premium 80% Lower Fire/Safe Marked Billet Raw (1-pack) 3 Premium 80% Lower Fire/Safe Marked Billet Raw (1-pack) 4

    Premium 80% Lower Fire/Safe Marked - Billet Raw

    Our Premium Billet 80% Lower has been redesigned with easier assembly in mind. This receiver has been enhanced with a threaded bolt catch release hole, as well as a threaded rear takedown detent hole. No more roll pins and loose springs! These...

    $79.99
  • AR-9 80% Billet Lower - 9mm, (1-pack) AR-9 80% Billet Lower - 9mm, (1-pack) AR-9 80% Billet Lower - 9mm, (1-pack) AR-9 80% Billet Lower - 9mm, (1-pack)

    AR9 80% Lower - 9mm - Billet

    Introducing the dedicated 9MM (AR-9) 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. Most...

    $99.99
  • Sale
    Blemished .308 80% Lower Fire/Safe Engraved - Anodized Black 1 Blemished .308 80% Lower Fire/Safe Engraved - Anodized Black 2 Blemished .308 80% Lower Fire/Safe Engraved - Anodized Black 3 Blemished .308 80% Lower Fire/Safe Engraved - Anodized Black 4 Blemished .308 80% Lower Fire/Safe Engraved - Anodized Black 5

    Blemished - .308 80% Lower Fire/Safe Marked - Billet

    Blemished .308 80% Lower: Minor scratches, perfectly functional. Sometimes, receivers get a ding or scratch -- it's just part of forging gun parts. We discount these cosmetically blemished 80% lowers to reflect these flaws. Each lower is 100% functional...

    Was: $119.99
    Now: $99.99
  • .308 80% Lower .308 80% Lower .308 80% Lower .308 80% Lower

    .308 80% Lower - Billet

    Enjoy the classic black look with our .308 80% lower receiver. Made from billet 6061-T6 Aluminum, these are incredibly rugged lowers that are made to last and are anodized black to help protect against corrosion. They are NOT marked with Fire/Safe...

    $119.99
  • Premium .308 80% Lower Fire/Safe Engraved - Raw 2 Premium .308 80% Lower Fire/Safe Engraved - Raw 3 Premium .308 80% Lower Fire/Safe Engraved - Raw 4 Premium .308 80% Lower Fire/Safe Engraved - Raw 5 Premium .308 80% Lower Fire/Safe Engraved - Raw 6

    Premium .308 80% Lower Fire/Safe Marked - Billet Raw

    (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 USA Find a...

    $119.99
  • .308 80% Lower - Raw 1 .308 80% Lower - Raw 2 .308 80% Lower - Raw 3 .308 80% Lower - Raw 4

    .308 80% Lower - Billet Raw

    Figure out the look of your next .308 build with our .308 80% raw lower receiver. Made from billet 6061-T6 Aluminum, these are incredibly rugged lowers that are made to last and are unfinished to allow for the durakote, cerakote, or other finish of your...

    $114.99
  • .308 80% Lower Fire/Safe Engraved - Anodized Black 1 .308 80% Lower Fire/Safe Engraved - Anodized Black 2 .308 80% Lower Fire/Safe Engraved - Anodized Black 3 .308 80% Lower Fire/Safe Engraved - Anodized Black 4

    .308 80% Lower Fire/Safe Marked - Billet

    Enjoy the classic black look with our .308 80% lower receiver. Made from billet 6061-T6 Aluminum, these are incredibly rugged lowers that are made to last and are anodized black to help protect against corrosion. They also come marked with Fire/Safe...

    $119.99
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A billet 80% lower affords some unique advantages over the traditional forged unit: Since the entire receiver blank is precisely cut using CNC machines from one piece of 6061-T6 aluminum, more complex shapes and aesthetic considerations can be made. Our billet lowers feature broached mag wells, integrated and heavy-duty trigger guards, and most importantly, threaded fittings for some of the original roll pin fixtures found in your lower parts kit. If you've ever installed an LPK before, you've probably learned that trying to punch those tiny lil' pins in place can be a pain.

Billet 80% Lowers: Mil-Spec Fit, Finish

In addition to cool looks and unique features, our billet 80 lowers still sport mil-spec fittings and a proper Type III hardcoat anodized finish. This ensures 100% compatibility with virtually all "retail" factory and aftermarket AR-15 parts, ensuring you can customize your new AR to your liking. Our billet receivers are compatible with all 5.56 NATO, .223 Remington/Wylde, and 300 Blackout configurations. We also introduced the new AR9 billet lower for dedicated 9mm carbine and pistol builds! 
 

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).

Benefits of a Billet 80% Lower Receiver:

  • Minimal technical skills required to complete
  • Maintains the custom integrity of your build
  • Corrosion-resistant 6061-T6 aluminum
  • CNC machined to Mil-Spec standards
  • Made in the USA
 
Execute the right to bear arms today. Your 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 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.