The Garmin Virb doesn't ship with a handlebar mount and it seems no one makes them. Until now I have made do with expensive GoPro mounts and difficult to obtain adapters.
This mount works with the cheap eBay style bottle cage mounts that are used to stick water bottles to the seat post.
The drawings are configurable in SolidWorks. It is still a work in progress, I may come up with something more open and configurable in the future.