Replace the factory rear sight with the custom Rear sight plate and transform your SP-01 Shadow into whole new pistol. Mount holes available for 14 and 18,8mm dots sights. The rear sight plate which also acts as a slide racker, is made of high grade aluminum for durability and reliability. The rear sight plate has a different set of holes to accommodate different types of red dots. Manipulating the slide is also easier with the slide racker function on the rear plate. With less effort due to a levers protruding to the sides of the rear plate, racking the slide back is much faster and easier during stressful situations.