I have started "downsizing" the calibers from .45 and .357 and .40 to 9mm, 9x18 and 380. Which leads me to my Glock 23 Gen 3 Do you think it wiser to see my 23 and buy a 19 or replace the parts needed to convert the 23 to a 19? Sometimes I don't trust changes like this but I haven't heard any negative comments.