I checked out mine and it sure looks like you would unsnap the light bar from the body then tilt the light bar and boom back and down so the hook can be removed from the opening in the body then unsnap the hook from the boom, the scary part, and snap the new one one on. The boom has that tab on top that holds the hook pivot down but it is pretty sloppy, may come off easy. You could probably put a little pressure on that tab to help give it some clearance if it's tight, lubrication always helps too,. I would run it under some hot water to expand the opening a touch and give it a little more flexibility too if it gets stubborn. The plastic seems pretty flexible, not like it would break easily or it would, always see the hooks missing and the booms look okay so the hook must come off easy? If it's like the chassis plastic you could really bend it without breaking but who knows. Shapeways sells the parts anyway. Good luck!