Mark: I had the same problem trying to locate a release for my Super X-1. I finally found one. However, I did contact about every trigger man in the country about converting my existing trigger to a release and nobody would do it. I finally contacted Phil Crenwelge and he said he would convert my existing trigger assembly to a release. I have heard nothing but good things about Phil's work and if I were you I would contact him about converting the trigger on your 31. His phone # is (210) 313-5988. Good Luck. Ed