Fine Guns | Accessories | Gunsmithing
European Screw on Front Swivel Base w/2 Screws for mounting to the center rib of a Side by Side shotgun. Convex base is 33mm / 1.300" long and 6.5mm / .256" wide with two M3 x 0.5mm screws. Hole spacing center to center is 21mm / .827". Comes with a fixed swivel loop. Specify 7/8" or 1" when ordering. Swivel base, screws and loop ship blued.