Modifies provisions relating to public safety

HB 2816 modifies Missouri's public safety laws by updating rules on the use of force and establishing new options for concealed carry permits. The bill clarifies when an individual may use physical or deadly force to defend themselves or others, explicitly removing the duty to retreat from their own home, vehicle, or private property, and shifting the burden of proof regarding self-defense claims to the state in specific situations. Additionally, it creates a "lifetime concealed carry permit" and an "extended concealed carry permit" valid for ten or twenty-five years, allowing eligible residents to carry firearms without needing to renew their license annually. To qualify for these new permits, applicants must meet standard requirements such as being at least nineteen years old, passing background checks, completing safety training, and having no recent criminal convictions or restraining orders.