The Unity MRDS Top Ring enables direct mounting of micro red dot sights to the top of FAST LPVO scope mounts creating a versatile dual-optic setup for 30mm optic tubes.Unity MRDS Top Ring for FAST LPVO MountCompatible with 30mm optic tubes7075-T6 aluminum construction for durabilityType III Hardcoat Anodized black finishPositions micro red dot at 12 o'clock when used with FAST Optic Adapter PlateMost micro red dots will clear the scope (heights vary by optic)Essential accessory for tactical shooters and precision rifle enthusiasts seeking rapid target acquisition capabilities with their LPVO setup. FAST LPVO mount and Optic Adapter Plate sold separately.