Yes, Wolff does have a spring kit. The kit, with three various weight hammer springs, and three various weight trigger springs, sells for (I believe) $10.50. I bought the kit and installed it in my .45ACP Tracker. I'm certainly no expert, and I had no problem installing it. What it does for the double action pull was amazing.As for the trigger. Most doubles do have a heavy trigger. Wolf I believe makes the replacement springs for them.