Upgrade your AR-15 build with ADR Tactical’s precision 80 percent billet ar-15 lower receiver . CNC machined from billet aluminum, our stripped lowers come in standard mil-spec versions with a choice of coatings or in the raw. You can also choose the optional LightWeight or Skeletonized versions for a customized build. Our lowers mate with any mil-spec upper receiver and are made in the USA. Visit us now!