Mossberg 500/590 Series Tactical Shotgun Picatinny Rail Mount with Hardware by Golden Eye Tactical Picatinny rail mount for Mossberg 500 and 590 Series and equivalent shotguns Allows for the mounting of Picatinny or Weaver standard scopes, red dots, magnifiers, or other optics Measures 5.5 inches long, easy to install design; It is a tactical, low profile top rail mount accessories Comes with screws for installation on Mossberg 500 Series and compatibles