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.

Manufacturer Website:
www.weaveroptics.com

Weaver 48445 Detachable Top Mount Base 424M, Matte Black / Optics > Bases / Weaver 48445