This is an adapter for the Stunicon and Protectobot Car Cannons in my Shapeways shop.
This plugs into the 5mm port on the rear of Stunticons's vehicle mode and creates a 5mm peg on the vehicle. By itself, the adapter can be used as a hand held weapon. It has 5mm ports to combine with other transformer weapons. This is compatible with Combiner Wars Deluxe class figures Dead End, Break Neck, Breakdown, and Dragstrip (or similar molds like Streetwise, Smokescreen, Prowl, Break Neck, Lightsteed and more). This is not meant for use with the Truck molds.
Dragstrip's Car Cannon can be found here:
This is intended for adult figure collectors. This is not designed for rough play by children.
This was tested with White Natural Versatile Plastic and fit with no problems. Depending on the plastic you choose, sanding or polish may be needed to fine tune the fit.