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: Remington Models 10, 11, 12, 34, 341, 510, 511, 512, 512T, 513S, & 513T
Fits: Remington Models 10, 11, 12, 34, 341, 510, 511, 512, 512T, 513S, & 513T