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.
Colt Sako action
H&R 317 made before 1975
Sako Forester Finnbear and Vixen tapered dovetail
Tikka Sako tapered dovetail
Valmet tapered dovetail
Western Field 750
This is only a single mount. You will need to order two mounts for mounting a scope.