i noticed on my combatmaster mkiv that the part of the barrel that shows when the slide is closed is stamped "colt .45 auto" and under that it says "MKIV/series 70". Do all the cm's have "colt" stamped there? and what is the "series 70"?. My local gun store said that somebody replaced it with a colt part for greater accuracy..i think he was blowing smoke.
thanks
Dennis