Ohuhu Ruger 10/22 Picatinny Rail Mount for Scopes and Optics Precision machined from lightweight aluminum, 4.5 inches in length and 1.1 ounces in weight Picatinny rail with 11 slots for Ruger 10/22 model rifles Low profile with middle V-cut for use with iron sights Complete with 4 screws for fast installation Used to mount Picatinny or Weaver standard scopes, red dots, magnifiers, or other optics