Quote:
Originally Posted by forrestinmathews
Polishing removes metal. If you thought the lockup was loose and the gun wasn't as accurate, you're in for a real ride now. It's okay, 9 out of 10 M&P's aren't shot anywhere near there potential anyhow. Mine isn't, but I'm working on that consciously, at speed and distance.
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Using a super fine scotch pad & some jewelers rouge, I seriously doubt that you are going to remove enough metal to harm the lockup. It hasn't harmed mine at all. I'm using a Dremel tool with a polishing felt wheel, not a bench grinder.