My G30SF trigger safety was not working properly. If it was pressed at all (without pulling the trigger) the safety would not reset to its forward position. The trigger had to be manually pushed to the forward position. I took it to a glock armorer and he switched out the trigger/trigger bar assembly. There was a bad spring in it. When he changed it out I had him put the smooth face trigger for the G21SF in it instead of the standard serrated trigger. (All free of charge of course) Just wondered if anyone else has had this issue.