EGW Guns Picatinny Scope Base Features The EGW Guns Picatinny Scope Base is machined from 6061-T6 extruded aluminum chosen for its strength and resistance to warping under repeated mounting and dismounting of optics. Full-width cross-slots are gauged to MIL-STD 1913 specs within plus or minus .002 inches giving a precise secure fit for both Picatinny and Weaver scope rings. The base mounts directly to the factory scope holes on the Ruger 10/22 receiver so no drilling or tapping is required during installation. Its silver anodized finish is matched to complement the natural finish of many Ruger 10/22 receivers rather than clashing with a black mount on a silver gun. At a 6.276 inch overall length and a 2.57 inch center spread the base is sized precisely to the 10/22 s factory hole pattern for a drop-in fit. EGW includes hex head screws and a wrench for installation and recommends 20 inch pounds of torque along with a drop of blue threadlocker for a lasting mount. The Picatinny footprint lets 10/22 owners choose from a huge range of scope rings and red dot mounts rather than being locked into Ruger s proprietary rail. This base is a simple clean upgrade for any Ruger 10/22 owner looking to add a quality optic for sale at GrabAGun. EGW Guns Picatinny Scope Base Specifications Manufacturer: EGW Guns Model: Picatinny Scope Base Material: 6061-T6 Aluminum Finish: Silver Matte Elevation: 0 MOA Mount Type: Picatinny Rail Compatible Hosts: Ruger 10/22 Length: 6.276 Center Spread: 2.57 Available At: GrabAGun