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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 features a matte black anodized finish that perfectly matches any upper receiver….
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. No more roll pins! This enhancement allows for a quicker, simpler install of your lower parts kit with fewer tools required. 100% mil-spec fitment ensures this lower works with all…
Blemished 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. Blemish Billet 80% lower Specifications: For AR-15 builds (5.56/.223/300 BLK/6.5 Grendel) Type III Hard Anodized Billet Color: Anodized Black 100% Mil-Spec Quantity:…
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 to choose a favorite. So, don’t settle — just grab…
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 80% lower is identical to our mil-spec, forged, anodized units. 80% Lower Specifications Compatibility:…
Our updated billet AR-15 billet 80% lower with a quality lower build kit. Grab a quality, mil-spec lower assembly kit built to pair with your new 80% lower and save! This kit contains all components required to assemble the lower half of your custom AR-15 build in one kit. Just finish the lower, put it…
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 Engraved Color: Anodized Mil-Spec Black Quantity:1 Forged 7075-T6 Aluminum Broached Magwell 100% Made in the USA Sold…
Start your next AR build by killing two birds with one stone. Get your 80% lower and your lower parts kit all in the same place in one fell swoop. This bundle includes both. You get a 7075 T6 forged aluminum 80% lower and a mil-spec lower parts kit that’s had its interacting surfaces polished…
Our updated AR-15 billet 80% lower now paired with a quality lower parts kit. Grab a quality, mil-spec LPK to pair with your new 80% lower and save! We’ve bundled a quality parts kit with our new billet lower to offer a convenient 2-for-1 package that makes your custom AR-15 build easier and more affordable….
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 as strong as any other receiver. This receiver blank features a matte black anodized finish that…
The O.G. forged AR-15 80% lower, now skeletonized. Pressed and cut from 7075-T6 aluminum, this skeletonized 80% lower is the perfect solution for building an ultra-light or custom AR-15 different from all the rest. The cut-out mag well pairs perfectly with any windowed or translucent magazine while retaining the strength and reliability you get with…
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.
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. Under ATF’s 2022 frame or receiver rule, which the Supreme Court upheld in Bondi v. VanDerStok in March 2025, a receiver blank that hasn’t reached the point where it can be readily completed isn’t a firearm, so it ships to you without a serial number or FFL transfer.* Once completed, it’s a firearm. You can then build it into a finished AR-15 with an upper assembly and lower parts kit, or grab a complete AR build kit.
Not sure which one to pick? This guide compares all 80% lowers.
Follow our AR-15 Parts Guide to build your custom rifle.
*State laws vary. Some states require all firearms to be serialized. Some states have banned 80% lowers.
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.
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 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.
