The Unity MRDS Top Ring for FAST LPVO enables direct mounting of micro red dot sights to the top of LPVO scope mounts providing 34mm compatibility with black anodized finish.Unity MRDS Top Ring for FAST LPVO Mount34mm size for precise fit7075-T6 aluminum construction for durabilityType III hardcoat anodized black finishCompatible with Unity FAST LPVO Mount systemRequires FAST Optic Adapter Plate for optimal positioningEssential accessory for tactical shooters seeking to add backup optics or enhanced target acquisition capabilities to their LPVO setup with professional-grade construction and reliability.