I always thought blaming gun manufacturers for a crime involving a firearm was kinda silly. If someone gets killed with a hammer, will the family be able to sue Stanley for making the hammer and "putting it in the hands of the lawbreaker?"
Guns are tools, and nothing more. Thay aren't bringers of death, just tools. Like hammers and chisels and axes, they're just tools. Yes, they're designed to throw a lead ball hundreds of feet per second, but hammers are designed to smash and axes to chop. Same logic, right?
R. Lee Ermey said it best. "A gun is merely a tool. It's a hard heart that kills." We can't sue gun manufacturers for putting guns in the hands of criminals. All they do is assemble and make the guns. They don't know where the gun is going or whose going to use it. You'd be better off suing the gun shops.
But, that's just my opinion. I'm 18, and my opinion isn't really valued nor cared about. *shrug*