After collecting six very nice 3rd generation Smiths, I decided to modify one. Mine were too nice to grind, file, sand and polish so I decided to buy a beat up LE trade in. I picked up this dinged and scratched 4516-2 and started in changing the things that I considered lacking. The list includes; rounding all exterior edges, flush grind the rear of the slide to the frame, remove mag safety, checker 30 LPI front strap, reduce thickness of safety levers and slide release and checker, action job and polish all contact surfaces. For me it turned out great and shoots as expected.