By far the strongest composite polymer Lower on the market today—and still just 4.3 ounces. The AR1 eXtreme Stripped Lower is made from state-of-the-art proprietary polymer…which delivers superior strength and unmatched durability to withstand extreme conditions. When most lowers dent or break, the AR1 eXtreme bounces back to shape.
Even better, it accepts all standard mil-spec uppers up to .50 Beowulf—so you have plenty of options for your next build. It's also compatible with most current AR-15 parts kits, grips and stocks. The AR1 eXtreme comes with a lifetime warranty, and, of course, it’s proudly American-made.