Been looking for a ML for some time and have narrowed my choices to an Optima or Kodiak. I have a question reference the Optima. Can you swap barrels on the optima, and optima pro or the elite only? I noticed that in one of the CVA videos they were shooting an optima pro and took the ML barrel off and replaced it with a shotgun barrel. Can you do the same to a center fire barrel on the optima pro, or optima?