Around December I purchased a m&p 9mm pro series. Absolutely love the gun. At about 200 rounds the white insert around the tritium came out on my front night sight. Did a little research and turns out that they are known to do that. So I called S&W and they happily took it in and put a new front sight in. Okay cool, little bit of a hassle but not a huge deal. Was able to get it out again last weekend. Not even 100 rounds shot through it and it did it again! WHAT?! bunch of . Now I have to send it in again. It's great that they will cover it, but I do not want to keep sending this thing in because the insert keeps falling out. Anybody else have this problem? If so, how did you go about it?