I hate the "Made in Someplace" stamp almost, well more actually, than the coil spring. A body can always cut out the "Made in" protion of the barrel and put in a brass patch with one's name on it. Just cut, file, or grind off a 32nd or a bit less, and in with a patch.
When I was younger I would bore out the touch hole on flinters and install an undercut (bored from the backside) stainless steel vent. I read someplace that quality flinters from back in the day used platinum vents made in such a way and stainless was as close as I could come on farm laborer wages.
I don't know which is harder, building from scratch or cleaning up the off the shelf version.
I think as I get older and I think more that the number of days that I have remaining to finish a project are becoming increasingly limited, I also become increasing willing to accept "glitches' in my historically correct mentality.