What you need is
http://www.brownells.com/.aspx/pid=9...FILE-STONE-KIT A trigger fixture would also be nice. Problem is everything is so darn expensive for someone that is just a tinkerer. Since I don’t do trigger jobs every day I use is a two sided oil stone (course and medium) an Arkansas bench oil stone and an Indian Mountain pocket wet stone. I’m very careful to keep the correct angles. Hope that helps.
You may also be interested in one of these.
http://www.brownells.com/.aspx/pid=1...GGER-HAPPY-KIT