Many thanks a lot of for the info. I'm likely to reach out to this fellow and see what his wait occasions are. Thanks! Regretably, I'm on vacation so I can not publish photos of the bolt. It's MPC engraved. The only real marking to the carrier is the "C" https://johnathanddzup.muzwiki.com/7275608/5_easy_facts_about_colt_combat_elite_commander_45_acp_described