Weapon Framewok??? (Help)

I have been haunted by trying to do this forever, creating weapon framework. Basically I want to make a gun that shoots, and you don't have to select a tool, it is not a tool. I have been struggling with this, and I hope it I can get a model from someone? I am an intermediate scripter, maybe just give me a simple model of it, and I can take off from there!!! Hopefully someone knows what I am talking about? PLEASE HELP :P