Joy Fireball.
I built a handgun prop for a small local science fiction project called "Joy". Visit the blog for the build progress reports.
Black Betty the rock firing dual barrel pistol
Below is the recently completed gun prop. It's a mean looking, massive, double barrel shotgun pistol prop that can be cocked and reloaded, has working triggers and interchangable bullets. For all the construction details and a lot more images, take a squiz at the blog.
Material costs: AUD$200 (most of which was the cost of paint).
Build-a-Prop?
Project proposals/requests can be emailed to this
For more things I've built have a look at: Hobby Projects.