Love that M&P. I'm considering getting a milled slide for my Glock 19 and tossing a Trijicon RMR on there. I have night sights on my M&P with a Streamlight TLR-1 HL on there. I'm not planning on messing with that set up. Unfortunately I owe Uncle Sam $750 bucks this year so my upgrades will have to wait for a bit.