Warne Vapor Picatinny rail for Ruger 10/22 is designed to offer shooters an affordable and reliable mounting platform manufactured for the popular Ruger 10/22. The V490-15MOA scope base for the Ruger 10/22 offers 15 MOA of elevation built in. An extra 15MOA allows gives you more eleveation adjustment in your rifle scope for pushing the limits of your 10/22 but works perfectly fine for short range work. Works great with red dots and maginfied optics and LPVOs.Our Ruger 10/22 Picatinny scope mount extends slightly over the receiver to allow a little mounting space for your optic.