1875

Mo. Const. of 1875, art. II, § 17.

Missouri

Right to bear arms, when – That the right of no citizen to keep and bear arms in defense of his home, person and property, or in aid of the civil power, when hereto legally summoned, shall be called in question; but nothing herein contained is intended to justify the practice of wearing concealed weapons.
Post-Civil War State Constitutions