Lower Receivers

Upgrade your AR with many of the same top-quality, American-made parts we use in our line of Beast rifles.

Most of these parts are coated with our proprietary NiB-X^® nickel boron coating process (indicated by the NIBX prefix in the individual part numbers). WMD’s exclusive NiB-X nickel boron coating helps any part resist friction, wear, and fouling. What’s more, the incredibly lubricious surface of WMD’s coated parts means that they can function smoothly without frequent oiling. All our components are made in the USA to OEM-grade tolerances.