Sourcing of parts is a really good question and it seems that subject isn't often thought of when building custom rifles. What will happen 20 years in the future if the manufacturer of a one off custom action is out of business? One only has to look back to rifles of yesteryear to see the issue. If a person wanted a custom rifle 60 years ago and decided to use a Pre-64 Model 70 or Mauser 98, parts are still available even today. If they had chosen a Shultz & Larsen 54 action for their build, I suspect parts would be a wee bit more difficult to find. That's for full on production actions, not actions from a small shop. Maybe something to think about when contemplating a custom.
