My initial proof of concepts were electro, same with all 4 previous editions, and then with the final set of 3 Mules the one you saw was my only mech gun. The rest were tested with multiple valves ans setups, and didn't really look pretty. The other two mules weren't even final guns but solid mount for testing the electronics and testing the internals. The mech was just a fun play gun, and it really is just a blast to shoot. But it wasn't intended to be production or for mech to be an option. It just felt so good to shoot... I made it my main gun. I figured if I could make it work as mech the electronics would be a snap. And they are.