These are my Uberti Walker and Uberti 1st Model Dragoon with Kirst .45 Colt Conversion cylinders. They both use the same loading gate assembly, it can be switched back and forth in seconds. That saved me some money LOL. I cut the loading channels with a die grinder, and then hand-sanded the channels. Cold blued and oiled them, resulting in a great match. A good shooting, fun pair.