You will need a sight pusher, as the sight is two pieces (the ramp/base and the bead sight). The ramp/base is held in place by two screws, one of which is hidden by the top portion of the sight (which is drift fitted into the dovetail). Push it out with the sight pusher, or tap it out (which can be difficult if you aren't careful, as some of them are very stubborn). Once its out, you'll see the second screw holding the ramp on. Remove both, and the sight will come off.
