Airgun Conventions

A guy on another forum that I frequent about Mac computers was asking about conventions that people go to. It occurred to me that I don't really know where or when airgun conventions are held. I did a little research and found that there's one in Sacramento, but it was in March. Maybe next year. What other airgun conventions are there? If you can, provide a link to their website.
 
The SHOT (Shooting, Hunting, Outdoor Trade show) is an annual event put on by the NSSF (National Shooting Sports Foundation) for those involved in the shooting/outdoor industry. Generally, this means attendance is limited to retailers and their employees or companies that are linked to the outdoors as well as law enforcement, and the outdoor media.

The public version of the SHOT show is the Great American Outdoor Show held annually in Harrisburg, PA.