FMK

AR-15 Lower Receiver - Multi Caliber - Black Polymer - Will accept any small caliber AR-15 parts kit - Ready for your parts kit this stripped lower from PMK is a budget option for your next AR-15 build. - The AR1 Patriot is Manufactured in the USA of high - mpact Proprietary composite Polymer. This state of the art polymer allows for superior strength unmatched durability and is - extremely lightweight. The key to any good project is the foundation and on an AR-15 that is the lower receiver. The AR1 - Patriot accepts all standard MIL SPEC uppers and is compatable with most current ar-15 lower parts kits grips and stocks.