The XS Scout Rail for the Ruger Gunsight Scout rifle is machined from billet aircraft aluminum and finished with hard coat anodizing. The Gunsight Scout rail installs using the factory mounting holes but it extends over the receiver to give you more flexibility in mounting your optic. With the extended XS rail you can mount optics in the traditional position over the receiver or out in front of the receiver. This rail also features a rear peep sight that works with the factory front sight. Notes: No gunsmithing required, uses factory mounting locationsRear ghost ring sight includedMounting hardware included