I recently bought a set of aftermarket sights, front and rear for my M&P 45. I've done a number of Glock installs over the years using the Glock sight tool and never had a problem. I do not presently have a sight tool for the M&P. I tried to remove the rear sight with a drift after unscrewing the set screw, but the thing would not budge. I just had the slide clamped between two pieces of pine in a bench vice, and because of that I decided not to beat on it further.
Can anyone familar with changing sights on the M&Ps tell me if a sight tool would be my better option, or should I just take it to a gunsmith and have it done? That rear sight seems to be set pretty tight.