Unity Tactical LPVO Offset Optic Base Black. When the top cover is removed the optical device is raised to a co-located (over head) position with the back surface of the base. Installation is identical to our LPVO mount using the pre-drilled screws and nuts. Installation of the cover on the opposite side of the base is identical to the LPVO mount including screws and nuts. Specifications for Unity Tactical LPVO Offset Optic Base: Manufacturer: Unity Tactical Red Dot Sights-Footprint: Not Applicable Optic Cut: Not Applicable Hand: Ambidextrous Weight: 0.6 lb Condition: New Package Contents: Unity Tactical LPVO Offset Optic Base Unity Tactical FST-SOBB: LPVO Offset Optic Base Black