I carry a G23C on duty and have run it through dozens and dozens of courses of fire; tactical, static, day time, night time, standing, sitting, prone, etc., etc., etc. In over 10,000 rounds I have never experienced any of the issues that are always brought up when people ask about porting. No flash, no debris, no burnt skin, etc. The only thing I have ever experienced is a dirty front sight, noticeably less muzzle flip and somewhat less recoil.