Weaver

Each Weaver base is machined to the tightest tolerances for a custom fit. They are 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. - Fits: Winchester Models 06 62 62A 90 Octagon barrel (Front & Rear) 61 Octagon (Front) & 77 (Front)