Kerry,
The TRP PRO (formerly BUREAU MODEL) is totally handfitted. It also has a Nowlin match barrel, match bushing,ambi safety, 4.5 lb trigger, Smith & Alexander magwell, Black T finish, Tritium insert in the sights, guaranteed 2.5 inch group (or whatever it was) at 50 yards, total reliability, etc.
The plain civilian TRP come either in stainless or Armory coat (Springfield's version of the Black T), doesn't have night sights, match barrel, magwell, and not fitted as tight as the PRO.