Someone emailed me about my sights, I got them from Wilson Combats site. Honestly though, if I had to do it over again I would have gone with the new Trijicon HDs with the thinner front sight in yellow. The main reason I chose the WC Battle sights is because I like a thinner front sight post and they were one of the few making a thin tritium front sight. My issue with them though is that the tritium dot in the front sight is so small it can be hard to pick up sometimes in low light. It just isn't bright enough. It is possible I got a defective front sight with a slow leak, I don't know. I don't really shoot my M&P that much really and I haven't carried it in months. Once the newness of it wore off I haven't really thought about it much.