"If someone commits a crime with a gun that you manufactured, you should be held liable" would be a great way of doing things, but alas...

If somebody drives drunk in a Toyota, the CEO should be sued. Same logic.

Dude. How far is that stick up your ass? I mean cmon. Seriously??? Thats like saying if someone were to take your car and commit a crime while using said vehicle, the owner of said car should be held liable. What you say makes no sense unless you gave them the gun and kew they were going to commit a crime. And thats not even what your saying. Use your brain dude. You have it for a reason