CO Const., Article II, Section 13

Right to bear arms. The right of no person to keep and bear arms in defense of his home, person and property, or in aid of the civil power when thereto legally summoned, shall be called in question; but nothing herein contained shall be construed to justify the practice of carrying concealed weapons. Source: Entire article added, effective August 1, 1876, see L. 1877, p. 30.