We have made a couple of parts for the AR-15 . We have made both a gas block and a flash hider/suppressor. Both parts are made of 17-4PH mat’l. The gas block is only 1.3 oz and the Flash Hider/Suppressor is only 2.7 oz. These parts are only the beginning. We are starting to make different parts for many different platforms to hopefully include the AR-10 and AR-9.