and I'm quite impressed! My very first round 10 yards downrange put a hole in the paper where the red bullseye was before. Also had no problem keeping the other 50 rounds on the 3 inch target. Extremely impressed.
I have not, nor do I see any reason to at the moment. I would eventually like to upgrade the trigger assembly, though the stock setup works great. I finally caved in and got the 17 because I just wasn't attracted to my Ruger LC9 anymore. I have a more suitable firearm for carry, and it just wasn't enjoyable to shoot, and sought a more enjoyable 9mm. My roommate has a G23 and I've always been impressed by the trigger and how accurate I was with it(more than he was). I'll put a whole bunch of rounds through before I consider mods.