Weaver 48443 423M Top Mount Base Mount

Detachable Top-Mt Base Mtt 423M Description 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.