Last year I stumbled across a 4576 and could not resist buying it.I also have a 4516 ,a 4566 and a 4506 .All 3 were my duty weapons at the PD . I purchased a 1076 also which was a new in the box Raleigh,NC PD gun that was never issued.I stole that one $400.I really like the frame mounted decockers which to me are easier to manipulate than the slide mounted one.