I was curious.......if I replace my stock sights on my Glock with one of the various "night sights", will that alter any chances of me ever shooting in a GSSF match? I've tried to read through the rules, but I need it explained in "laymans" terms. I'm new to Glocks, but my goal is to get accustomed to it for this year, and hopefully by next year I can shoot in a match or two. Right now I have a G23 and I am planning on a 34 or 35 this winter. What recomendations do you suggest BEFORE going into a GSSF match (i.e. holster, amount of clips, any upgrades(if allowed), amount of ammo to take?) If I find a "local" match, do they allow you to show up as a spectator to see what's really involved or is it for GSSF members only? Sorry for the long post, but this has me really interested as something I want to try.