This parts is TAV Override Weapon Parts.
This is designed in reference to a toy of G1.
It is right and left common parts.
You can attach this with a robot mode, both forms of the vehicle mode.
On the occasion of a vehicle mode, please attach it in reference to a photograph.
Please attach it so that a handle becomes the top.
I recommend metallic plastic if you reproduce a color of G1.
http://www.adventoys.com/#!tav-override-weapon-parts/r5zaa