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24 of 24 Items
  • Sale
    80% Lower Fire/Safe Marked - Anodized Black 1 80% Lower Fire/Safe Marked - Anodized Black 2 80% Lower Fire/Safe Marked - Anodized Black 3 80% Lower Fire/Safe Marked - Anodized Black 4 80% Lower Fire/Safe Marked - Anodized Black 5

    80% Lower Fire/Safe Marked - Anodized Black

    Our famous, original forged 80% lower. It's the lower trusted by tens of thousands of AR builders. Proudly forged, cut, and anodized in the U.S.A., this 80 percent lower is the key to building your custom AR-15 truly from scratch. This receiver blank...

    Was: $74.99
    Now: $69.99
  • 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
  • 80% Lower Patriot Pack AR-15 Forged Lower AR-15 Forged Lower AR-15 Forged Lower AR-9 Billet Lower

    80% Lower Patriot Pack

    Build all three ARs with one 80% lower combo kit. Originally chambered in 5.56 NATO and .223 remington, the AR has evolved to chamber different calibers, with upper and lower receivers redesigned to include the .308 AR-10, and the 9mm AR9. It can be hard...

    $264.99
  • .308 80% Lower .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...

    $129.99
  • AR9 80% Lower Fire/Safe Marked - 9mm 1 AR9 80% Lower Fire/Safe Marked - 9mm 2 AR9 80% Lower Fire/Safe Marked - 9mm 3 AR9 80% Lower Fire/Safe Marked - 9mm 4 AR9 80% Lower Fire/Safe Marked - 9mm 5

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

    A new AR9 80% Lower Receiver tailored for 9mm rounds This AR9 80% lower receiver is machined for compatibility with Glock® (G17 and G19) 9mm magazines without the need for conversion blocks. Machined from 6061-T6 billet aluminum using CNC for a...

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

    Blemished - 80% Lower Fire/Safe Marked - Anodized Black

    Blemished 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 and...

    Was: $64.99
    Now: $59.99
  • 80% Lower Fire/Safe Marked - Raw 80% Lower Fire/Safe Marked - Raw 80% Lower Fire/Safe Marked - Raw 80% Lower Fire/Safe Marked - Raw 80% Lower Fire/Safe Marked - Raw

    80% Lower Fire/Safe Marked - Raw

    Our original forged 80% lower, now available uncoated. Our mil-spec forged lower's now available in raw aluminum, allowing you to more easily apply a custom camoflauge paint job, or other custom coating of your choice. Beyond its raw finish, this forged...

    $59.99
  • .308 80% Lower - Raw 1 .308 80% Lower - Raw 2 .308 80% Lower - Raw 3 .308 80% Lower - Raw 4 .308 80% Lower - Raw 5

    .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...

    $109.99
  • AR 15 Lower Assembly | Lower Parts Kit | Butt Stock | Buffer Tube | FIRE/SAFE | Premium Billet | 80% Lower 1 AR 15 Lower Assembly | Lower Parts Kit | Butt Stock | Buffer Tube | FIRE/SAFE | Premium Billet | 80% Lower 2 AR 15 Lower Assembly | Lower Parts Kit | Butt Stock | Buffer Tube | FIRE/SAFE | Premium Billet | 80% Lower 3 AR 15 Lower Assembly | Lower Parts Kit | Butt Stock | Buffer Tube | FIRE/SAFE | Premium Billet | 80% Lower 4 AR 15 Lower Assembly | Lower Parts Kit | Butt Stock | Buffer Tube | FIRE/SAFE | Premium Billet | 80% Lower 5

    Premium Fire/Safe Marked Billet 80% Lower Assembly

    No AR-15 build is complete without a butt stock assembly – and this one comes with all you need: Black Billet FIRE/SAFE engraved 80% lower, lower parts kit, butt stock, buffer tube assembly. The Premium 80% Lower Fire/Safe Marked Billet...

    $144.99
  • AR 15 Lower Assembly | Lower Parts Kit | Butt Stock | Buffer Tube | FIRE/SAFE | Forged | 80% Lower 1 AR 15 Lower Assembly | Lower Parts Kit | Butt Stock | Buffer Tube | FIRE/SAFE | Forged | 80% Lower 2 AR 15 Lower Assembly | Lower Parts Kit | Butt Stock | Buffer Tube | FIRE/SAFE | Forged | 80% Lower 3 AR 15 Lower Assembly | Lower Parts Kit | Butt Stock | Buffer Tube | FIRE/SAFE | Forged | 80% Lower 4 AR 15 Lower Assembly | Lower Parts Kit | Butt Stock | Buffer Tube | FIRE/SAFE | Forged | 80% Lower 5

    Forged Fire/Safe Marked 80% Lower Assembly

    No AR-15 build is complete without a butt stock assembly – and this one comes with all you need: Black FIRE/SAFE engraved 80% lower, lower parts kit, butt stock, buffer tube assembly. One (1) Black FIRE/SAFE 80% Lower Receiver: FIRE/SAFE...

    $129.99
  • Sale
    Blemished 80% Lower Fire/Safe Marked Billet 1 Blemished 80% Lower Fire/Safe Marked Billet 2 Blemished 80% Lower Fire/Safe Marked Billet 3 Blemished 80% Lower Fire/Safe Marked Billet 4 Blemished 80% Lower Fire/Safe Marked Billet 5

    Blemished - 80% Lower Fire/Safe Marked - Billet

    Blemished Black Billet Premium 80% Lower This receiver is blemished. Surface marks will vary. The lower receiver is fully functional once fabricated, just like any unblemished 80% lower. NOTE: BLEMISHED LOWERS ARE FINAL SALES AND NON-REFUNDABLE...

    Was: $89.99
    Now: $84.99
  • .308 Lower Assembly | Lower Parts Kit | Butt Stock | Buffer Tube |Billet 80% Lower 1 .308 Lower Assembly | Lower Parts Kit | Butt Stock | Buffer Tube |Billet 80% Lower 2 .308 Lower Assembly | Lower Parts Kit | Butt Stock | Buffer Tube |Billet 80% Lower 3 .308 Lower Assembly | Lower Parts Kit | Butt Stock | Buffer Tube | Billet 80% Lower 4 .308 Lower Assembly | Lower Parts Kit | Butt Stock | Buffer Tube | Billet 80% Lower 5

    .308 80% Lower Assembly

    Got your mind set on building your own AR10 Rifle? Then check out this lower assembly that features a .308 80% lower crafted from 7075-T6 aluminum billet and anodized black. It also includes a lower parts kit that has been laser cut and polished for a...

    $224.99
  • Blemished - .308 80% Lower - Billet Blemished - .308 80% Lower - Billet Blemished - .308 80% Lower - Billet Blemished - .308 80% Lower - Billet Blemished - .308 80% Lower - Billet

    Blemished - .308 80% Lower - Billet

    Blemished .308 80% Lower: Small scuffs, 100% performance. Save a couple bucks on your 80% AR-10 build! These blemished .308 receiver blanks feature small surface blemishes, which may include slight scratches or scuffs -- but they're perfectly functional...

    $99.99
  • AR9 80% Lower Fire/Safe Marked - 9mm - Raw 1 AR9 80% Lower Fire/Safe Marked - 9mm - Raw 2 AR9 80% Lower Fire/Safe Marked - 9mm - Raw 3 AR9 80% Lower Fire/Safe Marked - 9mm - Raw 4 AR9 80% Lower Fire/Safe Marked - 9mm - Raw 5

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

    Introducing the dedicated 9mm 80% Lower Receiver This 80% 9mm lower receiver is fabricated to use Glock® (G17 and G19) 9mm magazines out of the box. No 9mm conversion blocks or custom components necessary! CNC'd from 6061-T6 billet aluminum, this...

    $79.99
  • AR-9 80% Lower Assembly - Fire/Safe Marked 1 AR-9 80% Lower Assembly - Fire/Safe Marked 2 AR-9 80% Lower Assembly - Fire/Safe Marked 3 AR-9 80% Lower Assembly - Fire/Safe Marked 4 AR-9 80% Lower Assembly - Fire/Safe Marked 5

    AR-9 80% Lower Assembly - Fire/Safe Marked

    Build your AR-9 rifle or pistol the easy way. Piecing together all the parts required to put together an AR-9 lower assembly -- that works reliably with a 9mm AR upper -- isn't easy. That's why we've done it for you. This lower assembly kit takes out the...

    $264.99 - $274.99
  • 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
  • .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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In the market for an 80 percent lower? The 80 lower receiver is a vital component for any do-it-yourself AR-15 AR9, or AR 10/308 build. 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.

Why Build an AR With an 80 % Lower?

There are plenty of benefits of using an 80% lower to build your AR-15, AR-10, or AR9:

Privacy. Because they're not firearms and have no serial numbers*, you get to skip the FFL paperwork and invasions of privacy when you purchase one of these receiver blanks.

*Local and state laws vary. Some states require serialization of all firearms, and some states have banned 80% lowers.

Cost. By buying an unfinished receiver, you're saving on manufacturing costs and you're avoiding the "brand tax" most gun makers charge. You also get to skip paying taxes and fees to the government.

Customization. By starting with a blank receiver, you get to decide what parts you install to finish your custom AR build, and you avoid paying extra for parts you don't want.

Compatibility. Our 80% lowers are made in the U.S.A. Lowers are forged and milled to tight tolerances, ensuring a perfect fit and finish. Lowers are MIL-SPEC and compatible with all off-the-shelf AR-15 parts. Once you finish your lower, it will be identical in form and function to the lower receivers found on any AR-type rifle available at any gun store.

Read our Complete Guide on How to Build an AR-15

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, unserialized receiver that isn’t considered a firearm under federal law. In other words, the ATF doesn't consider these to be guns because they're not fully machined, so they're not capable of being assembled into a working firearm in their current state.

Cutting and drilling the lower at home with hand tools -- something you, the builder, will do yourself -- turns an 80 percent lower into a firearm. Whether it’s an AR-15 or AR-10, thousands of shooters have built reliable and accurate AR-type rifles and pistols with our units.

Read this 80% Lower FAQ to learn more.

Types of 80 Percent Lowers

There are several types of 80% lower receivers available for the AR platform. Depending on which 80 lower you pick, you can build an AR-15, AR9, or AR-10 chambered in the following calibers:

AR-15 80% Lower (5.56/.223 Platform)

The AR-15 80 lower functions just like any stripped lower receiver you'd buy from an FFL or gun store. These lowers are available in billet (6061-T6) and forged (7075T6) aluminum, and polymer.  With one of these lowers, you can build an AR chambered in:

  • 5.56 NATO
  • .223 Remington
  • .223 Wylde (chambers both 5.56 and .223)
  • 300 AAC Blackout
  • 6.5 Grendel

AR-10 80% Lower (.308)

The AR-10 80 lower is based on the DPMS .308 AR platform, which currently acts as the universal standard for all .308-chambered AR-type rifles. Although technically different from the original ArmaLite AR-10, the DPMS .308 is still refered to as the AR-10 platform, and is it practically identical in form and function. It can chamber the following cartridges:

  • .308 Winchester
  • 7.62x51 NATO
  • 6.5 Creedmoor

AR9 (9mm AR)

The AR9 80 lower is based largely on the AR-15 lower. It uses most of the same components, including the same grip, trigger, hammer, safety, and disconnector, as well as the same buffer system and buffer tube. But it uses a custom magazine well and ejector to handle the 9mm cartridge.

Not sure which lower to pick? This guide compares all 80% lowers.

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).

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.