RSMo 571.030. 1. - Unlawful use of weapons--exceptions--penalties - A person commits the crime of unlawful use of weapons if he or she knowingly:
(8) Carries a firearm or any other weapon readily capable of lethal use into any church or place where people have assembled for worship, or into any election precinct on any election day, or into any building owned or occupied by any agency of the federal government, state government, or political subdivision thereof; or
8. Unlawful use of weapons is a class D felony unless committed pursuant to subdivision (6), (7), or (8) of subsection 1 of this section, in which cases it is a class B misdemeanor, or subdivision (5) or (10) of subsection 1 of this section, in which case it is a class A misdemeanor if the firearm is unloaded and a class D felony if the firearm is loaded, or subdivision (9) of subsection 1 of this section, in which case it is a class B felony, except that if the violation of subdivision (9) of subsection 1 of this section results in injury or death to another person, it is a class A felony.