I hope this is the right place to ask this question...I bought one of these, used, a couple months ago. It was used by a law enforcement agency and they sold them to a gun shop when the department bought new guns. I was told that I could change the trigger from double action only to DA/SA. Does anyone know how I can do this? I haven't had any luck finding anything on the net on how to do it or on Sig Sauer's website.

