Description The LEUPOLD BackCountry Cross-Slot Picatinny Rail mounts to model-specific bolt-action rifle receivers to provide a solid mounting surface for heavy, tactical sights. The 1-piece rail is constructed from machined, lightweight 7075-T6 aluminum, and comes with a matte black finish. The Leupold BackCountry rifle scope base has a universal cross-slot design, which is compatible with Leupold Mark 4 aluminum rings, or standard Picatinny or Weaver-type rings. Includes mounting hardware. Made in USA.