had my friend do a trigger job on my MP9, and wow the gun feels totally different, a lot less overtravel, about a 4-5 pound trigger now, which is a lot smoother and breaks towards the end of its travel.
http://www.youtube.com/watch?v=_LdoIYW-hLY
http://www.youtube.com/watch?v=_LdoIYW-hLY