NEW FRONTIER ARMORY C5 80% LOWER RECEIVER

New Frontier Armory C5 80% lowers can be milled and drilled to accept common AR-15 lower parts kits, and non-standardized parts such as the magazine release and ejector come installed from the manufacturer, meaning you won’t need to chase those down individually.  Must use a 9mm upper receiver that can accept the wider MP5 9mm magazines.