I have smoothbore gun without a bolt marked "JGA Original Karabiner" 9mm glatt. I've gathered this is an Anshutz cheap, probably from the 60's. A garden gun chambered for a 9mm flobert. What I can't find is a bolt for this thing. I think it's cool, I'd love to use it as a training shotgun for my two kids. Does anyone know where to find a bolt for this thing? Any leads, are good leads at this point.