I'm thinking about installing a 3rd function on my FEL. I've seen several posts about it, but has anyone actually installed one on a BX? Some pictures might be helpfull, especially from the valve.
Recently, a member with the name Artisan was looking at adding a 3rd function for a grapple and I believe member sqidget added one to his BX25. You can probably find those threads by searching on their names.