I recently acquired a DotM Skyhammer. It is missing two rotor blades and did have its mechtech weapon - but its handle had snapped off in one of the ports.
Used some pliers to pull it out, drilled a hole in the weapon that was small enough not to interfere with the weapon and put a small screw in.
Cut the head off it, drilled a hole in the handle and screwed it back on.
Holds fine and still does its mechtech thing.
Below are the pics I took of a test run.