This chaingun is made of polystyrene and 2 types of eva foam. It contains 1 LED (not visible in the pic) and the barrels can spin!. The power supply is big 6 V battery. It was put together using hot glue, screws and putty. It has been painted with acrylic colours, using spray, a sponge and a brush.
Pics of the creation: https://www.facebook.com/pg/doomcosplay/photos/?tab=album&album_id=641658652700758

VIDEO of the motion: https://www.facebook.com/doomcosplay/videos/425284671004825/