So I know theres already another great kit for WFC Megatron on shapeways by Fakebusker. Its great and all, but i was looking for something a more simple. I don't care for articulated fingers, just hands that can hold things. So thats what I did. I made his new arms with the same transformation as the original, but now they look more accurate (with some personal touches as well) and have new hands, based on RTS Perceptor. I also made the connection points for the wrist to the arm a ball joint system of sorts, this way eliminating the need for a pin. As well, they do have the same port for the stock cannon.
UNTESTED!