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: - Beretta Mato Rifle (Rear) - Winchester Models 70 (375 H&H Magnum Post-1963) and 70 Target (300/375 H&H) (Rear)