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: - Browning Lever Action (Front and Rear) - Colt Coltsman round receiver (Front and Rear) - Mossberg Models 810 & RM7 (Rear) - Western Field 730 (Rear) - Winchester Models 52 and 61 w/ an octagonal barrel (Rear)