I have a new Mossberg 590 shotgun and the safety switch on the top of the gun is incredibly hard to move back-and-forth. After a while my thumb is in pain.
Does anyone have a suggestion on how to loosen it up?
A similar situation happened very recently to another forum member here. Here is the thread for you to read. Maybe this will help. Of course, it could be something entirely different but that glitch has happened before.