I have been thinking about getting a glock 19 for a while now (bad timing right?) and recently I learned that if you get a glock 23 you can actually buy a barrel/magazine mod that will enable you to make it a 9mm at anytime with ease. Other than the obvious of spending the extra money on another barrel, is there any advantage of having a glock 19 over going with a glock 23 and buying the 9mm barrel?? Wanna kill these ads? We can help!