Mossberg Picatinny Rail Scope Mount features an aluminum construction in a black finish. Designed specifically to fit Mossberg 500, 505, 510, 590, 590A1, 535, 835, 930, and 935 shotgun platforms, this base provides a Picatinny rail interface. Measuring 6.5 in length, 0.25 in height, and 1 in width with a weight of 3 oz, it includes mounting hardware. Safety Note Always ensure the firearm is completely unloaded before installation or adjustments. Follow recommended torque specifications.