I have a DBL barrel shotgun pistol .Shoots 45 colt or .410 shotgun rounds .Handy little car gun about 26 oz empty ,easy to shoot as a single action 2 shot pistol.Picture has more info.There was a heat sheild under the barrels took it off and replacing the grips that came with gun ,they were to small for a good hold but in the meantime this works quite well .I don't recall were I bought the gun it might have been SOG or FAC .