very recently got my M&P9 from WE, S/N 20xxx and the sear is nice and sharp, the hop up wheel is free to rotate and it works great. the hop arm needed a little bending to lower the bucking without curving the BBs though.
the glowing sight works - when moving from sunny outdoors to a dark room, long trigger reset like the real one as i remember.
overall fine gun.
the grip is definitely going to be stippled to cover up the WE logo.
now i can start working on my engraving, re-finishing and maybe making a whole new slide for it from AL7075-T6... Mil-Spec hard anodizing of course...