Manufacturer: Weaver 48053
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.
No. 53 mount
Specifications and Features:
1 piece aluminum detachable top mount base
Square cut notch eliminates recoil
Navy Arms Country Boy muzzleloader
Winchester 88 and 100