There are no marks on those guns, I've got one in the basement, or had one anyway. I've shot it; it works! I don't think mine is in as smooth a condition as the one pictured, mine's been used. I think to find the name you'd probably need to find the patent, if the inventor patented it. He may not have bothered, since there's no patent mark on the gun either, at least as far as I recall.