EDIT:
Gun control is not Crime control.
i have an ics m4, but someone told me its the same. you should see two holes on the bottom of the sight. those are pins that hold the sight in place. for me, the easiest way was to take an allen wrench that fit in the hole, but not throught the pin, and bash it out with a hammer. carefully of course :twisted: pop out those two and ur good to go.
it depends on what u got. does it have any kind of mount at all? or does it have a mount built on to it already liek the walthers? it probably wont clear the front sight but itle be fine. your suposed to shoot with both eyes open so it wont mess up your line of sight any ways. but to take it off there should be a tinny little hex screw on the bottem unscrew that and take the barrel off and it should slide off.