Get Your 80 Percent Lower Today


Looking to build your own AR-15 rifle but don't know where to start? 80 percent lowers, a great option for anyone who wants the satisfaction of building their firearm without having to deal with the hassle of paperwork and FFL dealers. At Madcow Defenses, we offer 80 lowers that are made from high-quality aluminum and come with all the necessary machining details already completed. That means all you need to do is finish the final 20 percent of machining, which can easily be done with a drill press and some basic hand tools. So if you're looking for a fun and rewarding project, pick up one of our 80 percent lowers and get started today.


View as:
  • 80% AR-10 Lower

    80% Arms

    80% AR-10 Lower

    This is our Gen 1 Style DPMS lower receiver that is made out of billet 6061-T6 aluminum which is pre