An ORIGINAL Springfield Armory Sporting rear sight with elevator screw. Sights measure 3.6 inches long by 0.4 inches wide. The dovetail 5.55 X 3.70 inches. Made especially for Springfield rifles - Also fits on Remington, savage and Winchester 1892, 1894, and 1895 Sporting Rifles. Along with the small elevatr screw, this sight also takes the 2C Elvator part # st211-b.