WEAVER BASE 43

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