Modifies provisions relating to firearms

HB 1866 modifies Missouri laws regarding firearms, trespassing, and the use of force to clarify when individuals can legally use physical or deadly force for self-defense. The bill updates rules on property ownership by limiting liability for landowners toward trespassers while maintaining protections for children and consistent intruders. It also expands the circumstances under which a person may use force without a duty to retreat, including situations involving unborn children and specific types of private property. Additionally, the legislation revises restrictions on carrying concealed weapons and discharging firearms in sensitive locations such as schools, churches, and government buildings. These changes aim to provide clearer guidelines for lawful conduct involving firearms and personal safety across various scenarios.