Maxima M685-20MOA Ruger American Centerfire Long Action 20MOA - Machined from solid steel in both standard and 20 MOA configurations Warne Tactical Rails are designed around the Mil-Spec Picatinny style rail system and provide a strong and true platform for optics mounting. - Warne Tactical Rails allow the use of Picatinny or standard Weaver style rings. - Constructed of solid steel and machined in both standard and 20MOA configurations matte black only. - Cross slots feature the 1913 Mil-Spec design. - Bases securely mount to your gun with T-15 Torx style screws 25 in/lb. of torque recommended.