Safely and securely mount handgun optics with the Ruger 57 Burris/Vortex Adapter Plate. The airgraft-grade aluminum construction is hard anodized for extra durability. It fits the Ruger 57 pistol and is compatible with Burris and Vortex sights. Ruger 57 Burris/Vortex Adapter Plate Matte Black Hardcoat - Scope Rngs And Rifle Accessories at Academy Sports