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 Models 52 52C & A-Bolt (European Styles)(Front & Rear) - Colt Sharps (Front & Rear) - Parker-Hale 2600 (Front) - Ruger #1 and #3 (Rear) - Sako Models 72 75 & 78 (Front and Rear) - Winchester 520 (Front & Rear)