I think S&W's custom shop was supposed to address some of that niche demand. But, obviously, they modify rather than produce whole guns from the ground up. These days, however, with entire rocket engines being successfully 3D metal printed, I suspect it is only a matter of time before one of the manufacturers starts programming their old designs to be made by one or by more conventional CNC machines and offering them at what, no-doubt, will have to be a premium price to pay for the equipment involved. Their custom shops or their equivalent can then do any hand finishing required. It would be nice to be able to get a new pre-'64 m70 again.