It was not a manufacturing unit concern for that model. Maybe Imaginative crafting of an ordinary inventory. Pictures would enable to find out the appx yr your rifle was produced. forty four Together with the High Wall Model, built for the more highly effective cartridges, just the top on the https://highimpactrounds.com/product/winchester-super-x-20-ga-2-75in-3-4-oz-rifled-hollow-point-slug-1600-fps-5-rd-box/