I love the AA kit in my G17 gen 4, it does feel a bit light but I solved that by putting some weights I made from car balancing weights into the magazine, there's plenty of room in there when it is holding single stack 22! I checked the gun itself and the only thing lighter was the magazines due to the lighter ammo.
I've been using CCI blazers and minimags in mine, it loves both of them, no problems at all but you have to make sure the top round is seated all the way back in the magazine before you pop it in or it can FTL on you by flipping up instead of forwards when the slide closes.
The rear sight was a bit tricky to figure out the adjustment but once I got it figured out and sighted in, it's super accurate