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How to Build an AR 308 from an 80% Lower

Deciding on a gun platform is a very personal decision. Sure, every internet forum is full of gun “experts” who will tell you what you should be doing. We, however, like to let the shooter lead the way and guide themselves to the platform they desire most. After all, it will be your life and that of your family which is on the line when you need it most.

Let it not be said that we led you astray in such a moment. However, if the AR-308 tickles your fancy then we’ve got you covered. The process isn’t really that different than completing an 80% lower for an AR-15 and picking the right tools will be half your battle.

So let’s cover a few quick topics and walk you through this remarkably easy process.

So Long as You Build

Here at, we don’t so much care which weapon you choose to build so long as you are building. The enumerated benefits of building your own weapon far outweigh walking into your local sporting goods store and just asking for something that goes pew.

You see, once you learn how to build your own firearm, this is priceless knowledge that no gun grabbing politician will be able to take from you. Moreover, as with all 80% lowers the ATF doesn’t consider this a firearm until the milling process is finished.

That means you can ship them straight to your front door and build as many ARs as you want and of any variety. Except in the state of California where you have to pay government money and beg for a serial number. To our brothers and sisters of the pew in the Golden State, we feel for you. The 80 lower is increasingly becoming the favorite target of the 2A infringement movement.

So if you ever wanted one, now is the time to act.

Building the AR-308 from an 80% Lower

Because we know our customers are patriotic, we make all our products right here in the United States of America. Because we are confident in our work, we guarantee all our products with no questions asked. If the 80 percent lower looked at you wrong when you opened the box then send that insubordinate piece of metal back with no hassle on our end. In addition, because we know you are busy we put everything you need to finish an AR-308 on one page.

You’re welcome.

The first step is to pick any of the .308 80% lowers that we offer. Might we be so bold as to propose you buy your .308 80% lowers in bulk! After all, citizens in states like California and New Jersey are kicking themselves for not doing so right now.

Then, you just need to make sure you identify the right jig such as the AR-10 RAW Fire/Safe Marked 80% Lower. You don’t have to be an expert craftsman as the jig will guide you in doing all the work.

That’s it, voila. You’ve got yourself one top quality AR-308 that pews just the way you want it to.

People are often taken aback at just how easy it is complete an 80 percent lower of any variety. So easy a caveman could do it, with all apologies to the cavemen out there. As we mentioned, we don’t care how you pew just so long as you pew.

Grab yourself all the tools you need here and get to living this pew life the way it was meant to be lived.

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 AR-15LowerReceivers, 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.


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