An excellent option for mounting optics accessories on almost any type of rifle this DNZ Scope Mount - Ruger 10/22 1" Medium is made from a solid block of high-grade aluminum. This right-hand mount has a dimension from the outside of the back ring to the outside of the front ring of 4.29 inches. This medium mount has rings that are 0.625 inches wide and the black finish looks good on the rifle and will not reflect light.