Marlin Picatinny / Weaver scope rail black alloy with see through for iron sights. Compatible With Most Marlin Flat Top Receivers Lever Action Rifles; Marlin 60 .22, 39A, 30AS, 30AW, 336 (all models), 62, 93, 336, 336C, 375, 444, 1993, 1894 Cowboy, 1895, Glenfield 30, Zane grey, Camp-9, Camp 45, 922M, 989, Mossberg 640, Western field 740. Most Model XT Rifles. Select which colour you want 1) Black 2) Silver + I have 222 Loctite listed and its recommended to use on the screws.