An example of what may result from a couple years of thought and experimentation and adaptation of equipment meant for something else. The more you like old Marlin lever guns and 19th Century metal finishing techniques, the more you'll appreciate the latest product from the shop of Genius Jeff who acquired the raw materials as rusty junk.
It's all assembled now -- you should see the walnut -- and at the Tulsa loophole. I'm not clear whether he means to sell or merely display. I sort of hope the latter. It's comforting to have such art only a few miles down the road.
I cannot offer a complete geekout because I know little of case-hardening technique. You need to clean and polish the metal, taking care to preserve the flats and sharp corners and markings, then bake it in calcium carbonate or something like that. I'm told the pulverized bones of an Incan goddess work best, but in a pinch one can employ those of a sacred white buffalo. I'll ask him when he gets home.