So here is the situation.
I got a character who is a trained modern gunsmith and he finds himself thrown into a setting where the most advance firearm is the flintlock. I know some of the most advance guns are going to be out of reach because of the lack of machine tools and such, but I assume he be able to make something like a revolver or pistol with a bit of hard work.
I want the scene and steps to ring true, what do I need to keep it real?