Leupold BackCountry cross-slot bases are expertly crafted from 7075-T6 aluminum, making them some of the lightest yet most rugged mounts available. This particular BackCountry cross-slot base is designed to fit the Kimber 8400 Magnum Long Action and accommodates both Picatinny and Weaver-style rings, providing versatile options for your optics setup. The integrity of the connection between your scope and firearm is vital, which is why our mounts are engineered to be as durable and dependable as the Leupold optics they secure. With a wide array of mounting systems to choose from, you're certain to find the perfect match for your firearm and shooting style. Proudly made in the USA, Leupold mounts are built to endure a lifetime of rigorous use, ensuring that you receive the durability and performance you can rely on. Upgrade your shooting experience with Leupold BackCountry cross-slot bases and enjoy the peace of mind that comes with high-quality craftsmanship and innovation.