content: Why do you need to? go to the grocery store they sell deadly weapons right there. If the goal is just a deadly weapon pick up a kitchen knife for less then the cost of materials to print the gun and they are just as effective at short ranges after identifying a threat as the gun. Or just get a decent pocket knife but know the rules for if your area restricts concealed knives, no reason to set yourself up to go to jail for something after defending yourself.