Misaligned front site. - Ameriglo Front Night Sights For S&W M&P Models

I recently purchased Smith & Wesson M&p 40c it was Factory New old stock and I have the Triton night sights. My front sight is off to the left a little bit where makes a huge difference in my shooting. On the right side of the front sight there's a small s there does that mean anything? Do I have to go a certain direction? I know you guys do not recommend regular owners doing that but I'm not sending it in for repair. I am going to take a brass punch and just aline of myself. I'm not going to do this though until I know for sure that I won't completely ruined the slide.