It was not a manufacturing facility situation for that model. Maybe Innovative crafting of an ordinary stock. Pictures would aid to ascertain the appx year your rifle was manufactured. forty four 22LR, not for that 69A’s .22 S, L, & LR. I suppose this meant which the chambering and rifling https://highimpactrounds.com/product/winchester-target-223-rem-55-gr-fmj-3240-fps-20-rd-box/