Missouri Revised Statutes Title XXXVIII. Crimes and Punishment; Peace Officers and Public Defenders § 571.060. Unlawful transfer of weapons, penalty

(1) Knowingly sells, leases, loans, gives away or delivers a firearm or ammunition for a firearm to any person who, under the provisions of section 571.070, is not lawfully entitled to possess such;

(2) Knowingly sells, leases, loans, gives away or delivers a blackjack to a person less than eighteen years old without the consent of the child's custodial parent or guardian, or recklessly, as defined in section 562.016, sells, leases, loans, gives away or delivers any firearm to a person less than eighteen years old without the consent of the child's custodial parent or guardian; provided, that this does not prohibit the delivery of such weapons to any peace officer or member of the Armed Forces or National Guard while performing his official duty; or

(3) Recklessly, as defined in section 562.016, sells, leases, loans, gives away or delivers a firearm or ammunition for a firearm to a person who is intoxicated.