Hi youall! I need some help here from the experts. I have being shooting my G17 with the XS standard system for a wile now , but I just not doing very good at the range with it. I decided to go back to a more conventional set up for target shooting and also for HD. I just removed my rear XS sight and reinstalled the original plastic glock one. I like to keep the front. I won`t be able to go to the range for a little wile now to test it. Anybody knows if this combination would work or what kind of "better" rear sight could match the front XS standard? Happy shooting. Gio.