When it comes time to mount your favorite Leupold scope on your favorite rifle why not use Leupold Rifleman Mounting System. Designed to mount to a specific firearm these mounts are perfect attachment points for Weaver style rings. The Rifleman series is machined from aluminum and offers tighter tolerances which are based on a proven cross slot style design. Remember the mounts are specific to a firearm or a firearm pattern so please ensure that you are choosing the correct model for your specific firearm. Don&';t get stuck using some other brand, stick with Leupold for all your optics and optics mounting needs.Specifications and Features:Leupold 55910Rifleman Mounting SeriesOne Piece BaseWeaver StyleMachined AluminumMatte Black FinishFits:Marlin 336