I called today and verified that Dawson precision as well as Caspian have an adapter that can be added to 1911 frames for the Sure Fire weapon lights(I think the model #101).It is held on by screws. Both are aluminum.Both cost approx. $35.00 each. Caspian may possibly make it in carbon steel in the future. Has anyone tried one of these? It seems to me that the metal is fairly thin in the dust cover area that has to be drilled and tapped for the mounting screws. Could there possibly be a problem with cracking? If caspain made one in carbon steel, maybe this could be welded to a frame instead of screws?I would like to add this to an older first generation Caspian framed gun I have for occasional use. The gun would actually be shot very little with the light on. Just occasionally to practice night shooting. Any thoughts or experiences?