SC man gets life in prison for 776 homemade fentanyl pills, stolen Army machine gun

I'm wondering what law the anti-gun politicians could have passed to prevent this asshat from stealing a weapon from the military. Oh wait, it's already illegal and nothing a politician does will ever stop a criminal from doing criminal things. Arm yourself, defend yourself, legally. All of the laws passed to prevent these crimes harms the ability of the lawful citizen from defending themselves from asshat criminals like the idiot career criminal in the article.