Here's my dilemma. I want a full size 9mm to complement my G19 and G26. I have decided 9mm is plenty of firepower for me, so my G22 is kind of...extra baggage. My choices are to (1) sell the G22 and buy a G17 or (2) convert the G22 to 9mm. Needless to say, I don't want to give up reliability. I already have G17 mags that I planned to use in a new pistol. I've read lots of prior threads about conversion, but don't yet feel confident that converting my G22 from .40 to 9mm will give me the same performance as a new G17; that's the performance level I must have. Some say buy the conversion barrel and you're good to go. Others say change the extractor, too. Some also say it is also necessary to change the recoil spring. There doesn't seem to be a definitive guide for making the change in a way that real transformation from a G22 to G17 will take place. What am I to do? Either course of action is affordable.