Sig Sauer Alpha-MSR, Scope Mount, 34mm, 1.535 Height, 0 MOA, Anodized Finish, Black, Fits Picatinny SOA20015 Sig Sauer's alloy ALPHA MSR Scope Mounts are machined with an exactness that is both strong yet ductile that allows their 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.