The TANDEMKROSS "Shadow" Picatinny Rail for Ruger Mark Series and 22/45 is here and is a superior upgrade that both competition shooters and backyard plinkers can benefit from. Not only does the Mil-spec picatinny design allow for more precise and customized placement of optics, it is the perfect length and doesn't have an unsightly overhang over the barrel. The underside of the rail has a relieved ejection port area to provide a sure ejection of spent brass. This rail can be used with both fixed and adjustable iron sights in place. This gives you the option of removing your scope or red dot and using the iron sights without removing the rail. It is available in two finishes to match or highlight your pistol and comes with installation screws. Precision CNC machined from aluminum and anodized black. *Mount fits all factory drilled and tapped Ruger MKII, MKIII, MKIV, Government, Hunter, Competition, 22/45, and LITE rimfire pistols.* Dimensions: From End to End 3 3/8" From outside first rail to outside last rail: 2.9"