The Warne 1-Piece Tactical Base Remington 700 Long Action with 20MOA 1 Piece Matte is designed to work with the Mil-Spec 1913 Picatinny rail system. Made from solid steel, this tactical base is available in both the standard issue and the 20 MOA configuration. This tactical base provides a sturdy platform for the mounting of optics accessories and is one of the most comprehensive types of this base that you will find on the market today.