Rangefinder Swivel Modification

This is a modification to clone trooper helmets. It allows the rangefinder to swivel.
In the model, on the side of the rangefinder, you must cut a hole that is 20mm in diameter. Then insert the Tunnel piece and glue it in. Then from the inside insert the cap+dowel and glue the dowel to the rangefinder in the right position. If done correctly, the rangefinder will rest at the top and when you rotate to the bottom it will stay in the right place. Good luck!