This is a very unique portable cast iron portable shooting galley. I would say this probably dates back to around the 1920s or possibly earlier. I'm pretty sure this is a manufacturered piece since I have found one other. Not sure who made it.The squirrels get knocked down when shot. They stay down till you hit the middle target with spring action. It weighs nearly 14lbs Measures 11.25 Definitely a very unique and rare piece you don't sew every day.