Hey guys I've put 1200 rounds through my M&P 9mm and have decided on a rear blacked out sight and a red fiber optic front. Does anyone know the sight dimensions for the stock sights. I'm looking for the height and width of the front sight and the height and notch width of the rear sight, impossible to measure height while there on the gun. I would like to buy a set of Dawson Precision but would like to keep the same factory dimensions. I have called S&W 3 times on different days and none of there engineers know...which I find strange.