I recently acquired a 1921AC Thompson. I collect other historical Americana machines and artifacts (e.g. antque slot machines) and I've always been intrigued by the Thompson's iconic place in American history. I finally gave in to my collecting muse. First gun I've ever owned, but now it seems there will be more... Anyway, the gun is in excellent shape and has been well-cared-for. It is very clean and well-oiled. My questions (sorry -- newbie here) are: What type of cloths/oil should I use for the exterior metal. Same for the internal parts. What kind of tool works best for bore and breach cleaning -- I've seen brushes, ropes, you name it. And finally -- should I shoot it? What are the chances that shooting it will degrade it's value.