Love the early optical devices of the 70's and 80's. Huge lasers that were powered by virtually small car batteries caried over the shoulde with long power cords running to the device. Here is an HK illuminating light and projector. All I got was the device itself so I had to rewire it running off a Lithium Ion battery. I have several HK claw mounts. Fits nicely in a radio pouch.
Original
Mine
Original
Mine