Hello gents, About 6 or 7 years ago I picked up a early Gen 3 Glock 19. Has one "pin" not 2 and the old style extractor. Based on the serial number it was manufactured in 1995. Appeared to be unfired when I bought it no wear anywhere and the copper-colored lube was still inside the slide, and came with box and papers. I've shot it quite a bit well over 12,000 rounds so far and due to the size and weight it has been my EDC for the past 2 years or so. So . . . the question is: does this gem need to be "upgraded" ? ? I read the other day that some of the early Gen 3 guns need to have some of the parts replaced/upgraded by Glock. Is there anything I need to do ? ? Only thing I've done with it is add night sights, replace the recoil spring last year and run a bunch of ammo thru it and kept it clean. Been 100% reliable in every way. So . . . what say you ? ? Thanks ! !