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.
Browning 22 auto
H&R Topper 30, 22 Jet and 158 made before 1973
Norinco .22 auto
Remington 24 and 241
This is only a single mount. You will need to order two mounts for mounting a scope.