Our proprietary steel alloy ALPHA2 Scope Mounts are machined with an exactness that is both strong yet ductile that allows our rings to form around a riflescope yet will not damage scope under proper installation. The steel rings are epoxy powder coated to prevent oxidation and resist gun oils cleaning solutions and outdoor exposure. - FEATURES: - Steel 1913 style clamps - Covered by SIG SAUER's Infinite Guarantee