I had a 5904 NP3 lower/black Rogard upper done a few years ago. It seems to work fine but was a bit expensive. The nice thing is the NP3 is sort of a free "action job" because it slicks up the action. The Rogard wore a bit on the high points, but I don't know if I expected too much of it or what. It does look nice and is probaby as good as or better than my Armory Kote TRP. As far as putting it on the M&P, part of what interested me about the gun was the Melonite over stainless. I think it is as close to a abuse/neglect proof as you can get (I keep thinking cop-proof, that angle). Hard-chrome over stainless might be the only thing better, but the cost would probably take it out of the market it is meant for.