Gray Ops CNC Offset Bubble Level Black. When attached via our tight locking V-Groove design this bubble level is visible just over the left or right side scope parallax/windage knob when viewing through the scope. Making it easy to stay in the scope and still view the bubble level. Mounts on either the left or right side of the ring accommodating both left and right handed shooters. Specifications for Gray Ops CNC Offset Bubble Level: Manufacturer: Gray Ops CNC Color: Black Fabric/Material: CNC Machined Gun Type: Rifle Last Chance: Yes Package Contents: Gray Ops CNC Offset Bubble Level Gray Ops CNC GO-BUBBLE: Offset Bubble Level Black