Package includes:screws(4 pcs),as well as a L hex key for easy installation.
13 rail slots for flexible eye relief adjustments and all scope applications.
Measures 5.5 inches long.Installs via included set screws into the Mossberg factory mounting holes
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.
Quality Built with lightweight aerospace grade aluminum alloy.It is a tactical, low profile top rail mount accessories.