WEIG-A-TINNY ® Smith & Wesson K, L, N, and X Frame Revolver. Smith Wesson scope mount WEIG-A-TINNY ® Remove the rear sight and install this versatile WEIG-A-TINNY ® style base, scope mount in just minutes. (most Smith&Wesson revolvers mfg after 1992 are factory drilled and tapped for this scope mount) CAUTION: We do not suggest sights weighing over 3.5 ounces for this scope mount.
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