Early model ack-ack burp gun for ping pong. I didn't find out much information on this. I didn't see very many pistol type, mostly rifles. I can see where the seams are bad especially, handle grips, on top so I doubt that this works but it is untested. Nice novelty or collectors item. Patent pending made in Detroit Michigan. Rubber type nozzle tip. Under 12 in when compressed and pulls out the most 15 in. Please refer to photos