I purchased an M&P 9 Pro 5" a little while ago and am consistently having trouble with my vertical sight alignment with the front fiber optic sight. During rapid acquisition I tend to shoot low by several inches at 10-15 yards. I have somewhere near 1100 rounds through it and have had this issue the whole time. If I really take my time and focus on the front sight and deliberately line it up, I do OK, but as the speed increases the shots start going low again. I'm considering switching to a set of 10-8 Performance sights and looking for input before I do anything drastic.
Side note: I just completed a four day handgun course with this pistol and fired somewhere around 700 rounds over the four days. This gun had one FTF on the morning of day 3 but ran flawlessly other than that.
Side note: I just completed a four day handgun course with this pistol and fired somewhere around 700 rounds over the four days. This gun had one FTF on the morning of day 3 but ran flawlessly other than that.