An interesting article from Field and Stream.
My dad was a machinist/tool & die maker. He did some gunsmithing. The thing he didn’t or should I say couldn’t do was the heat treatment stuff, the annealing and hardening of the parts. He would have to send that off to folks that had the right furnaces and instrumentation to control the process.
Whether properly or not, my exposure to gunsmithing was mainly through Discovery Channel’s American Guns.
I have yet to see an actual gunsmith in the flesh.