Malada,
I just checked the latest issue of Big Show Journal and don't see anything in MO for over the July 4th week end. They list a show Jul 9-10 in St Roberts, Aug 7-8 in Joplin, Aug 21-22 in Springfield, Aug 26-28 in Macon and Aug 28-29 in Kansas City.
There is the Annual KC National Summer Show Jul 23-25 at the KC Expo Center.
If you are close to Kansas City and attend the RK shows at the Blue Ridge mall then expect them to move. A front page story in today's KS Red Star said that the building would be torn down, or some part of it, and a Wally World would go in there. All of this to be completed by sometime in 2005. If RK does not find a spot that that will leave just the US Weapons shows.
Hope this helps.