EGW Guns Picatinny Scope Base Features The EGW Guns Picatinny Scope Base is machined from 6061-T6 extruded aluminum with full-width cross-slots gauged to MIL-STD 1913 specs within plus or minus .002 inches giving shooters a precise secure fit for Picatinny or Weaver rings. Built to match the factory scope mount holes on the Winchester 70 standard and long action pre-64 receiver the base requires no drilling or tapping to install. A milled center channel in the middle of the rail reduces overall mass while in many cases still allowing use of factory iron sights. This Picatinny footprint gives hunters and tactical shooters alike far more flexibility in ring and optic selection than a proprietary rail. At a 7.064 inch overall length and a 3.805 inch center spread the base is sized specifically to the Winchester 70 long action s hole pattern and also fits the Winchester 670 Marlin XL7 and related rifles sharing that receiver footprint. The matte black finish is tumbled sand blasted and Type II anodized for long-lasting durability in the field. EGW includes mounting hardware and recommends 20 inch pounds of torque along with a drop of blue threadlocker sold separately for a secure installation. At 0 MOA this base is recommended for ranges from 0 to 500 yards making it a solid choice for hunters mounting a scope on a classic Winchester 70 for sale at GrabAGun. EGW Guns Picatinny Scope Base Specifications Manufacturer: EGW Guns Model: Picatinny Scope Base Material: Aluminum Finish: Matte Black Elevation: 0 MOA Mount Type: Picatinny Rail Compatible Hosts: Winchester 70 Long Action Winchester 670 Marlin XL7 Length: 7.064 Center Spread: 3.805 Available At: GrabAGun