Free: Contests & Raffles.
second picture, there is an allen screw on the down side.... loosen that and the round dowel looking part should slide in/out. It looks like it may be already set full left though.
My two cents. That sight is the worst designed biggest piece of crap ever to be mounted on a bow. Change it out quickly and save yourself the headaches. I bought my son a Diamond Infinite Edge which is really a great little bow with lots of range but that sight has to go.brianb231