RUGER-57 OAP DOCTER/MEOPTA/EOT 90722 | OPTIC ADAPTER PLATE Manufacturer Model Number: 90722 Manufacturer: Ruger Model: Ruger-57 Optic Adapter Plate Type: Accessory-Rings/Mounts/Bases Item Type: Accessory Shipping Weight: 0.05 Feature: Optic Adapter Plate Feature: Fits: Docter/Meopta/EOTech Optic Adjustable Objective: false Optic Reticle Illuminated: false