Serial # Is 9256XXX. I comprehend it was in a VA law enforcement dept It really is total existence and I believe it was manufactured around seventy four-75 timeframe. No supplemental engraving or markings from dept, selector marked Harmless-semi-vehicle. Hope that can help the database Tony. Should you stumble throughout https://martinnixpb.wikiannouncing.com/5677473/not_known_facts_about_colt_combat_unit_rail_gun_45