I have a 9 series Surfire (but I dont think it is the one you are looking for). Mine mounts via ARMS swan levers to the side of my SIR forend and has a tape switch that goes onto my forward vertical grip. It is in perfect shape with box and all paperwork.
I can email you some pics and the acutal model # if you are interested at all - all I remember is that it was just under 400.00 when I bought it (mounts included).
How much are you asking for your EoTech?