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: - H & R Models 65 165 150 151 (Auto)(Front & Rear) 250 251 264 265 365 450 & 550 (Rear) - Marlin Models 88 89 & 98 (Front & Rear) - Remington Models 12A & 121 with 3/4 diameter barrels 121 with 13/16 diameter barrels and 25 (All Rear bases) - Stevens 416 (Rear)