Mount modern day optics on your lever rifle without a gunsmith, just some hand tools! If the distance measuring from the front of the receiver to the center of the dovetail of the rear sight is 2 3/16“, 3 1/4“, 3 5/8“, 3 7/8“, and 4 1/4” (inches), this mount should fit. Note: If your gun is made by Winchester before 1964, not Rossi, please order the Model 94 rail as all Winchesters are the same.