80% AR15 Lower Receiver - 7075 Raw

$49.50 $40.50
(You save $9.00)
(63 reviews) Write a Review
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Made in the USA


Q - What is the difference between an AAO 80% lower and others?

A - Safe / Fire laser etched into the AAO Lower.  

   - ALL AAO Lowers have a built in lower to upper adjustment feature that can be used to take up the slack/space between the upper/lower fitment (via an included allen head screw).  

   - You can quickly test your upper to lower fitment with the AAO Lower before you mill, this is due to a small pocket milled into the rear takedown pin area.

   - High quality and best in class precision machining for a good price.  We are real gun guys and we fire what we make, so it has to be good.

Q - What material do you use?

A - All of our lowers are machined form: 7075-T6 Aluminum

Q - What LRPK (LPK) will work?

A - We recommend the AAO MFG LRPK, however any standard mil-spec LRPK will work.

Q - What does RAW or "IN THE WHITE" mean?

A - Raw means "unfinished" or "in the white", the unit has been fully deburred and is ready for you to finish.  

Q  - What information do you need if I choose CA Compliance Engraving via the drop down menus?

A - Leave your information in the notes section of the checkout page.

  • CA Compliance list information as follows: Your Name, Your City, State, Multi Cal, Your Serial# 
  • If ordering multiples lowers list your serial numbers as:  0001:0006 (serial number 0001 through 0006)

Q - Do you offer a bulk discount or other discounts?

A - Yes, purchase TEN AAO AR15 80% Lowers and RECEIVE A 10% DISCOUNT on your lowers.

Q - What calibers can be built with a finished lower?

.223/5.56 - .22 - .204 Ruger - 300 AAC Blackout - 6.5 Grendel - 7.62x39 - 458 SOCOM - 45ACP - 9mm - FN 5.7 - 7.62x25 - 5.45x39

Q - Is an FFL required to purchase this product?

A - NO, an FFL is NOT REQUIRED to purchase this product.

   - Anyone can legally purchase a 80% Lower Receiver.  An 80% Lower Receiver DOES NOT have to be sold through or registered through a dealer with a FFL (Federal Firearms License).   

Q - What JIG do you recommend to finish the AAO lower?

A - AAO Lowers are compatible with any JIG that will complete a standard Mil-Spec AR Lower.  If you are finishing an AAO 9mm Lower, the Ejector and LRBHO are removable so it can work with any standard Mil-Spec JIG.

Q - What are the operations that must be completed to make the 80% lower fully functional:

A - Machine the following using your JIG to finish our 80 percent AR15 Lower Receiver.  Our 80% Lower Receiver has a fully broached finished Mag Well.   

  • fire control group
  • safety select hole
  • trigger opening
  • trigger pin holes
  • hammer pin holes 
  • The AAO 80% Lower Receiver has been machined to match MIL-SPEC from a 7075 AR15 Lower Forging.

Q - What is a AR15 80% Lower Receiver?

A - 80% lower receivers are parts that have been partially completed.  

   - 80 percent or 80% is a generic term that means that everything is complete on the lower except for the fire control group, safety select, trigger opening, trigger pin holes & hammer pin holes.

   - Utilizing a jig and the right techniques, any 80 percent lower can be quickly transformed into a highly accurate and functional firearm. 

Q - Does a AR15 80% Lower Receiver require transfer or registration through an FFL? 

A - No. This is a do-it-yourself product.. You start with a 80% product and end up with a complete functional product after your finish the machining using your jig. 

Q - Is it legal to do this?  May I lawfully make a firearm for my own personal use, provided it is not being made for resale?

A - This quote is taken directly from the ATF Website http://www.atf.gov/files/firearms/industry/0501-firearms-top-10-qas.pdf: "Firearms may be lawfully made by persons who do not hold a manufacturer's license under the GCA (Gun Control Act) provided they are not for sale or distribution and the maker is not prohibited from receiving or possessing firearms."

Q - Can I build and then transfer a finished firearm to another individual? 

A - Yes you can, however you must mark the firearm in accordance with 27 CFR 472.92 (formally 178.92). You must follow all laws that are in place today. Do yourself a favor an protect yourself, don't put a completed firearm in anyone's hands unless you have gone through proper channels and background checks. Following the proper channels will protect us, our family, and our friends. For any firearm transfer it is your responsibility to understand the federal and local laws and how they apply.  

Q - Is it legal to assemble a firearm from commercially available parts kits that can be purchased via the internet or via Firearms News?

A - This quote is taken directly from the ATF Web Site: "Firearms may be lawfully made by persons who do not hold a manufacturer’s license under the GCA provided they are not for sale or distribution and the maker is not prohibited from receiving or possessing firearms. However, a person is prohibited from assembling a non-sporting semiautomatic rifle or shotgun from 10 or more imported parts, as set forth in regulations in 27 C.F.R. 478.39" https://www.atf.gov/file/61721/download



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  • 5
    AR15 Lowers

    Posted by Keith G Coulombe on Oct 13th 2020

    Exceeds expectations. Rear takedown recess a nice touch.

  • 5

    Posted by TJ B on Oct 13th 2020

    Great product. Great price. Fast shipping

  • 5
    80% AR15 Lower

    Posted by Rick on Oct 11th 2020

    Always the best quality products from AAO for your project. I would recommend this company.

  • 5
    80% AR15 LOWER RECEIVER - 7075 RAW

    Posted by Behind Enemy Lines on Oct 7th 2020

    AAO is as solid as they come, that's first and foremost. Great company, great products, and great service.
    I love these Raw 80's, as I finish with Cerakote anyway, I've built a number of them and never experienced a single issue; no out-of-spec parts, no damaged parts, nothing. I also very much appreciate that they machine out the area of the rear takedown pin. Not all distributors of 80's take this extra step but it makes things a good bit easier for us non-CNC'ers.
    I'm just a hobby-builder gun nut, and by no means wealthy, so cost and VALUE are important to me. With that said, I'm not aware of anyone who can reliably beat a price of $41 each!
    In closing I'll offer up A word to the wise: If you're not already using AAO's 80's sign up to be notified when they're back in stock!!! And when they're around ACT FAST!

  • 5
    80% Receiver

    Posted by Paul Caldwell on Sep 24th 2020


  • 4
    It would be nice if they were anodized black! Other than that, these receivers are perfect! Keep up the good work!

    Posted by Eugene H Peruski on Sep 22nd 2020

    Great product.

  • 5
    Excellent quality

    Posted by Anonymous on Sep 12th 2020

    These are machined to a very high quality. Ready to paint or coat. If anodizing I would suggest polishing a little first. Fit to multiple uppers is perfect. The tension screw is nice as well.

  • 5
    556 and M&P receivers

    Posted by Ryan on Jul 29th 2020

    I’ve gotten several receivers from AAO, both 556 and M&P 9mm. The machining has been great same with their shipping and their prices are the best I found. I highly recommend this company

  • 5
    Ar 15 80 Percent

    Posted by Angel G. on Jul 14th 2020

    Really satisfied with this item , fast shipping as well