Any tips?

Posted this gun a few days ago just got it dry fired and changed out the backstrap, didn’t take it out to the range yet, noticed the front irons slowly moving over then I checked it out and you can literally effortlessly slide the irons out the slot, called s&w and they said the irons are probably out of spec or the slot is over milled they didn’t even want to pay for a guns smith to put the irons on for me, hopefully it’s just the iron sight of spec and not the slot if not I’d have to send the whole slide in and wait 7weeks, sucks that I didn’t even put a single shot in this yet