I think guns are a lot like cars...they all roll off the same line, but for whatever reason, one vehicle is amazing...no problems whatsoever, while another vehicle turns out to be nothing but trouble. I've got a Glock 23 gen 4, and this gun is an absolute gem. Close to 5,000 rds, and not a single failure. Trigger pull is smooth as silk. I wouldn't think of changing anything on this gun. It's perfect.