I'm looking into picking up some night sights for my USP Tactical, but this is my first time purchasing night sights so I'm hoping I can get some pointers here. Price isn't too much of an object, but I would prefer if it would cost less than $200. Also, Crimson Trace lasergrips or anything similar to a Crimson Trace that works on the USP Tactical also works for me. Also, would I be able to install the night sights or lasergrips myself or would I require a gunsmith to do that?