I have been thinking of getting a longslide 9mm mostly for target practice. I don't compete in any leagues so I have been looking at the 17L with its 6" barrel. I also don't like external safeties, so I'm not looking at other longslides, like the Smith & Wesson 952, not to mention the price difference. Since I am not planning on competing, I don't need a tack driver, just something that I can practice with. I don't have anything in .40 S&W anymore though, and I was also looking at the Glock 24 as well. There are conversion barrels for it which allow you to shoot 9mm from it, so I was wondering if anyone had experience with converting a Glock 24 (or any other .40S&W Glock) to use 9mm. Specifically, I want to know if Glock 24 magazines will reliably feed 9mm ammunition, and how many rounds it will hold in it. Or, will a Glock 24 accept 9mm magazines, such as for the Glock 17? Furthermore, is there anything else that may need to be switched out? I would think that everything else should work with the 9mm, but would I need to worry about springs or anything else like that? Thanks in advance, your knowledge & experience is much appreciated!