Leupold BackCountry cross-slot bases are crafted from 7075-T6 aluminum, making them among the lightest and most rugged mounts available. This specific BackCountry cross-slot base is designed to fit the Ruger 10/22, accommodating both Picatinny- and Weaver-style rings for versatile optics options. The connection between your scope and firearm is critical for achieving optimal performance, which is why Leupold mounts are engineered to be as durable and reliable as the optics they support. With an extensive selection of mounting systems to choose from, you're sure to find the perfect match for your firearm and shooting style. Proudly made in the USA, Leupold mounts are guaranteed to withstand a lifetime of rigorous use, ensuring they will never let you down when it matters most. Enhance your shooting experience with the Leupold BackCountry cross-slot bases, designed for strength, reliability and exceptional performance in any environment.