WEIG-A-TINNY Mini Scope Mount Remove the rear sight and install this versatile WEIG-A-TINNY style base, scope mount in just minutes. Uses existing rear sight elevation screw hole and sight spring pocket for mounting. Oversize recoil lug prevents the scope mount from shifting even when shooting full-house, magnum loads. Accepts all Weaver-style attaching points and Picatinny accessories. 2-1/2″ long, available in black or silver, matte anodized finish, weighs 1 ounce. Attaching screws are supplied, mounting screw is 6-48 thread, set screw is 8-32.