You gotta get a nice side image of an air rifle. When a link is clicked the trigger pulls and one of those ‘Bang!’ flags comes out. Except instead of Bang you have your content written on the flags. Then when another link is clicked, the flag can either roll back up and go back inside or fall off. Depending on what you want.
You could also do it like a gun shop interface where you have a rack of guns and each one (or some of them) is a link to a certain page in the site.
Hope I’ve given you some ideas.