12 of 12 Items
12 of 12 Items

Looking for an 80 lower to complete your AR-10 or LR-308 build? You've found 'em. We're proud to offer shooters and builders like you the highest-quality billet, forged, and polymer 308 and AR-10 80 percent lowers. Our lowers have been manufactured to exact tolerances by some of the country's top metallurgists and gunsmiths. And yet, we also offer some of the cheapest 80 percent lower options you can find! Our prices are always the lowest, and most of our 308 and AR-10 80 lowers are on sale right now.

308 & AR-10 80% Lower Features:

All polymer .308 lowers include their own jig! The polymer jigs include the required drill bits and end mill bit for fabricating your receiver into a functional unit, too. Whether machining polymer or billet, it'll take around one to two hours to complete your lower receiver.

Compatible with DPMS LR-308

Many don't realize this, but the AR-10 and most .308-chambered ARs are not the same. The original ArmaLite AR-10 platform shares some similarities with those other rifles, but they're not interchangeable. So, we stuck with the most popular option on the market: The DPMS LR-308. Still nicknamed the "AR-10", the LR-308 is one of the most widely available and popular .308 AR line of products you can find. Our 308 80% lowers are compatible with all LR-308 parts.

Read the full guide comparing the original AR-10 to the modern LR-308.

Legally Build Your AR at Home

Try as politicians might, it is not illegal to build a gun at home for personal use, and no license, paperwork, or FFL is required under federal law. The ATF even says so. This means that you can buy your 80 percent lower, have it shipped directly to your front door, and get to building with an 80% jig. No paperwork required. No FFL transfer necessary. 

State Laws May Vary

Contrary to federal law, some states have either restricted or banned the sale, transfer, and ownership of 80% lowers, firearm blanks, and other gun parts. Because of these restrictions, we cannot ship our products to certain states. Please confirm whether your state is restricted on our Shipping & Return Policy before placing an order. We cannot fulfill orders to restricted states if placed.

Your custom .308 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, 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.