This Leapers Optic Mount Base features a matte black anodized aluminum construction engineered specifically for the Ruger 10/22 rimfire rifle chassis. It measures 4.67 in length, 0.35 in height, and weighs 1.30 oz. Designed to convert the factory receiver setup into a standardized MIL-STD-1913 Picatinny rail interface, it provides a stable and low-profile foundation for mounting optics and accessories. Safety Note Always ensure the firearm is unloaded before installing or adjusting any optics or bases. Verify proper torque specifications during installation. Improper mounting may affect accuracy and safety.