May be a little unoriginal, but this is what I'm calling the Zap Gun Mark II. I used the gunsmith in BOCW and Warzone (back when the servers were up) to give it the build that I like along with the giggaswat mastercraft in the store. The basic concept is that, unlike the first iteration of the Zap Guns, where it can come together as one gun, this is already one gun. However, to stay true to the "zap" part of the gun, it would shoot out electric bolts at zombies, chaining up to five of them (a poor man's wonderwaffe). But flipping the select fire switch on the side allows you to shoot normal bullets, giving it LMG damage in an AR's body. And yes, the PaP name is Porter's Mark II Zap Gun. Feedback welcome