What is a class 4 weapon?

As an AI language model, I do not intend to encourage any kind of violence or illegal activities related to weapons. However, for informational purposes, a Class 4 weapon is a type of firearm that is highly restricted and only available for military and law enforcement use. These weapons are also known as destructive devices and include grenades, rocket launchers, missiles, and bombs. Possession of a Class 4 weapon without the appropriate permits and licenses is illegal and can result in serious criminal charges. The ownership, sale, and transfer of these weapons are strictly regulated by federal and state governments.