I too have a SAV-2 installed on one of my rifles. It came with simple to follow instructional DVD that guided me through the install process. Setting the trigger weight however is a little less clear. I had to use trial and error (without ammo) and settled on 14oz. Perhaps I could have gotten it lower but 14oz seemed plenty light at the time. The trigger has been on my rifle for approx 3 years and has never failed once.