NEW Tactical Mossberg 500 Series Shotgun Picatinny Rail Mount Top Mounted Receiver Rail for Mossberg 500 Series and equivalent shotguns Black anodized aircraft grade aluminum Allows for the mounting of Picatinny or Weaver standard scopes, red dots, magnifiers, or other optics Installs via included set screws into the Mossberg factory mounting holes Weight: 1.6 oz