Weaver Top Mount Scope Base #12

Front Base: H&R 800; Savage 6, 7; Winchester 74; Remington 514, 550; Stevens 57, 76, 4171/2, 762, 85, 87, 872; Marlin 80, 81, 900, 917, XT-22, XT-17; Mossberg 50, 51, 151, 152, 350, 352. Rear Base: H&R 800; Sears 42, 43; Remington 514, 550; Savage 4, 5, 6, 7, 219; Marlin 80, 81, 900, 917, XT-22, XT-17; Winchester 57, 69, 69A, 72, 47, 74; Mossberg 25, 26, 42, 46M, 140, 142, 146; Stevens 56, 66, 57, 76, 4171/2, 762, 85, 87, 872; Mossberg 45-46 with 3/4" diameter barrels, 43, 44, 144, 46 BT, 35, 45, 46; Mossberg early models with 13/16" diameter barrels, 50, 51, 151, 152, 350, 352.

Features:Aluminum construction;For Weaver rings;A front or rear base for select firearms