EGW Guns Picatinny Scope Base Features The EGW Guns Picatinny Scope Base is precision machined from solid 7075 T6 aircraft grade aluminum giving it the strength and rigidity needed to hold zero under recoil and repeated handling. Picatinny slot-and-rail spacing allows fast simple changes to eye relief while offering shooters greater flexibility in scope choice compared to a proprietary mounting system. The base is drilled specifically to fit the factory scope mount holes on the Ruger 10/22 receiver so no drilling or tapping is required during installation. Full-width cross-slots are gauged to MIL-STD 1913 specifications within plus or minus .002 inches ensuring Picatinny or Weaver rings seat securely every time. Built with 20 MOA of elevation this base helps long-range shooters dial in additional adjustment that a factory rifle s scope mount cannot provide on its own. A center spread of 3.805 inches and an overall mount length of 7.064 inches give the base a solid stable footprint across the 10/22 receiver. Socket head Torx screws and a wrench are included for installation and EGW recommends 20 inch pounds of torque along with a drip of blue Loctite for a secure mount. Finished in a durable matte black this Picatinny base is a dependable no-gunsmithing upgrade for Ruger 10/22 owners though it will not fit the 10/22 Takedown variant. EGW Guns Picatinny Scope Base Specifications Manufacturer: EGW Guns Model: Scope Base Compatible Hosts: Ruger 10/22 Material: 7075 T6 Aluminum Color: Black Finish: Matte Mount Type: Picatinny Rail Elevation: 20 MOA Center Spread: 3.805 Overall Length: 7.064 Includes: Torx Screws Wrench Available At: GrabAGun