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.
Browning BLR with flat top (older models)(Front & Rear)
BSA other High-Powers (Front & Rear)
Herters U9 BSA Action (Front & Rear)
Marlin 39A &39D Century octagon bbl.(Rear)
Voere 2130 (Front & Rear)