Nobody makes bases to fit as many guns as Weaver. Yet each base is machined to tight tolerances for a custom fit. They're designed to fight the effects of recoil with a square cut notch that precisely mates to the sturdy cross bolt in every Weaver Detachable Ring. Custom hardened fastening screws come with every Weaver base.

Fits:
H&R 755, 765, 852 and 865, front or rear
Marlin 80, 81 and 980, rear
Mossberg 25, 26, 42, 46M, 140 and 142, rear
Mossberg 45 to 46 with 3/4" barrels, rear
Mossberg 320, 340, 342 and 620, rear
Mossberg 50, 51, 151, 152, 350 and 352, front or rear
Mossberg 43, 44, 144, 46BT and 35, rear
Mossberg early models 45, 46, 45A and 46B with 13/16" barrels, rear
Remington 514 and 550, front or rear; drilling and tapping requiredSavage 4 and 5, rear
Savage 6 and 7, front or rear
Savage 219, rear
Sears 42 and 43, rear
Stevens 56 and 66, rear
Stevens 57, 76, 4171/2 and 762, front or rear
Stevens-Springfield 85, 87 and 872
front or rear; drilling and tapping requiredWinchester 57, 69, 69A, 72 and 47, rear
Winchester 74, front or rear