The Gruning Optics Base provides the ultimate in stability for your scope. Typically, a scope base is little more than a narrow strip of metal perched on top of your receiver. The Gruning Optics Base, in contrast, utilizes a wide radius, making contact with a much larger surface area. As a result, lateral stability is greatly enhanced, and added rigidity is contributed to the action. One look at the photos will immediately make this clear. Just as importantly, the Gruning Optics Base includes a precision-ground steel pin that fits precisely into the top of the receiver, providing positive location in two dimensions. Our patent-pending design has a special step, so that the pin can never fall into the action. Finally, we upgrade the threads in your receiver top to 8-40. The larger screws provide a dramatic increase in shear strength that is indispensible with hard-kicking magnum rifles, as well as any hunting or tactical rig that could be subject to rough usage. The Gruning Optics Base is the choice of informed professional riflemen serving with elite law enforcement and military units around the world. Price ($435) includes parts and installation. Precision machined from 4140 steel. Available for the Remington 700 (short and long) and selected other actions.