FUNANASUN Tactical 11 Slots Picatinny/Weaver Rail Scope Mount for Marlin Lever Action with Wrench Material: Aluminum Alloy. Length: 4 3/4" (120mm). Width: 5/6" (20.8mm). It is solid 11 slots picatinny rail mount for your optic, scope, laser sight and allows an adjustment in their mounting positions. The picatinny rail fits for Marlin 336, Marlin 30-30, marlin 1895 45-70, Marlin 1894, Marlin 30AS, Marlin 30AW, Marlin Camp 9, Marlin Camp 45, Marlin 1894C 357, Western Field 740, etc. Holes align in straight line and have proper spacing for Marlin lever action. Easy setup with all screws and an allen wrench provided.