I can't sell my Gen4 model 22 and get what it's worth, so I want to convert to 9mm. Who makes the best conversion barrel, bar none, for this changeover? I'll pay the necessary bucks to get trouble free operation with 9mm. Are Glock 17 mags what I need to go with the conversion barrel? I wanted a model 17 when my son talked me into the model 22. I've regretted buying the 22 since day one. With a top quality barrel and 9mm mags, am I likely to get G17-like performance? I'm hoping to buy one that drops in without any filing or fitting. Thanks.