Unity Tactical MRDS Top Ring for FAST LPVO 30mm Anodized Finish Flat Dark Earth. When used with a FAST Optic Adapter Plate (sold separately) the micro red dot will sit at the 12 o'clock position and most (optic heights vary) will clear the scope. Each FAST Optic Adapter Plate footprint will accept any mini red dot with that same footprint pattern. COMPATIBILITY: All Optic Adapter Plate in the FAST Modular Accessory Suite MOUNT TYPE: FAST LPVO (Sold Separately) Specifications for Unity Tactical MRDS Top Ring for FAST LPVO: Manufacturer: Unity Tactical Finish: Type III Hardcoat Anodized Fabric/Material: 7075-T6 Aluminum Optic Cut: Trijicon RMR Additional Features: FAST LPVO Light/Laser Attachment: Trijicon RMR Quantity: 1 Package Contents: Unity Tactical MRDS Top Ring for FAST LPVO