I think the barrels were cannibalized from an extractor gun,thus the stop plate dovetailed int the dolls head. The dolls head has too large a gap around its periphery and is below the surface of the receiver. The engraving on the barrels looks faint and there is pitting on the top rib on the left side yet the receiver shows no signs of wear or pitting. There a lot been done to that gun that wasn't done by Parker Bros.