This Mossberg 500 and 590 scope mount Picatinny Rail is specifically designed for 12/20 Gauge shotguns and proudly made in the USA. The rail contours perfectly to fit Mossberg 500 and 590 models equipped with factory drilled and tapped receivers, ensuring a seamless installation. Featuring a low-profile, See-Thru design, this Picatinny Rail system allows for the use of your shotgun's front bead sight, maintaining visibility while enhancing your shooting capabilities. The mount is precision-machined from aircraft-grade aluminum and finished with a matte black hard coat anodization for added durability and a sleek appearance. With an overall length of 5.5 inches, the rail includes 13 Picatinny Rail slots, providing ample space for dot sights, rear sights and flexible positioning of magnified optics for optimal eye relief adjustment. The installation process is simple and user-friendly, as the mount comes complete with assembly screws and tools no gunsmithing required. Backed by the UTG Pro limited lifetime warranty, this scope mount ensures long-lasting performance and reliability. Enhance your Mossberg 500 or 590 shotgun with this high-quality Picatinny Rail, designed for precision and versatility in every shooting situation.