Mil-spec aluminum magazines, and quality Magpul PMAGs.
What more could you ask for? These two -- STANAGs and PMAGs -- are arguably the best 30-round magazines available for the AR platform. They're rugged, reliable, and can be stored loaded for years without spring fatigue.
All 80% lowers we sell are made to fit standard AR-15 magazines. That means all magazines available here are made to fit any lower you buy and fabricate at home.
Both 300 Blackout (supers and subs) and 6.5 Grendel (up to 26 rounds) will fit in any of our available magazines, ensuring they're compatible with any AR-15 kit you buy and assemble that's chambered in these calibers.
Contrary to federal law, some states have either restricted or banned the sale, transfer, and ownership of products we sell. 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.
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 GunBuilders.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.