DNZ 12042 Game Reaper-Marlin Scope Mount/Ring Combo Matte Black 1" fits Marlin Medium height
Mount fits both left and right hand models. Base screws are 8-40 X 1/4 long. Ring screws are 6-40 X 5/8 long. Base screws use a 9/64 Allen wrench and ring screws use a 7/64 Allen wrench.