The idea behind plastic guns is philosophical.<p>The government should not be able to forbid a person form effectively defending his or herself ; it's a natural right which can't be taken away by any government. 3D printed guns gives you back that right if your state has taken it away i.e. China. They are hard to detect so this is another plus ion the same vein as the first.<p>This is the point of the project as I understand it, as per the project's creator.