Serial # is 9256XXX. I comprehend it was inside a VA police dept It is really complete lifetime and I think it had been made all-around seventy four-seventy five timeframe. No more engraving or markings from dept, selector marked Secure-semi-vehicle. Hope that assists the databases Tony. In the event you https://colt-combat-elite-command45554.wikimeglio.com/9435207/what_does_colt_combat_unit_rail_gun_45_mean