These consist of two similar shaped round black plastic caps with 3 grooves cut in them. The laser projects through one and the wires come through the other one. By rotating these caps, you can change the angle of the laser and thus the location of the laser dot with respect to the sight. These slots are fragile, be sure to use the whole slot. The allen wrench is then used as a lever to rotate the laser cap.
Movement is stiff and there is nothing to clamp or unclamp.
Left and right adjustments are affected by the laser cap that the wires come through. Up and down adjustments are affected by the laser cap that the laser beam come out of. The adjustments work off a cam action so you only have a half a turn of adjustment before you start going back where you have already been. However, it should be enough to get the job done. These laser cap adjustments are very sensitive.