I finally got around to reading the manual that came with the used G23 I purchased last week and it talks about a bunch of service and safety stuff I don't yet know about. I'll be attending a gun safety/concealment class with my wife at the end of the month and that will be my first time shooting it. Anyway, this 23 is from 2002. It looks to me like it hasn't been used much but, truth is, I don't really know. Would you take it in to get checked first? Also, if you know, it looks like I can convert the 23 to a 19 by changing barrels for about $100. Assuming 9mm is cheaper to shoot and that my wife will probably end up with a 9mm, too, would you change over? I'll probably never use the 23 as a carry gun.