Well, Took my brand new Gen4 G23 to the range today. I've had her since monday. So she hasnt had one round through her. I shot some 180gr Winchester through her and some of my 165gr Winchester Rangers through her. A total of 70 rounds. No problems at all! She worked like a charm. I am so happy with my purchase. I have shot a Gen3 G23 before. My gun for some reason was trying to jump right out of my had. When I adjusted my grip she felt great. My friend has his Colt Defender out there and we rented a FN 5.7. We had a blast. My other friend that was with us refused to shoot my Glock we he saw the recoil on it. I was ok with that. He loved the FN, & Defender. He is new to guns and looking to make his first purchase. Tried to tell him its not bad and showed him how to hold it but he wasnt having it. Out of all of us It was me who accidently shot the women. But, it was with my friends Defender. Not with my Glock.