C.R.S. § 33-6-125

It is unlawful for any person, except a person authorized by law or by the division, to possess or have under the person’s control any firearm, other than a pistol or revolver, in or on any motor vehicle unless the chamber of the firearm is unloaded. Any person in possession or in control of a rifle or shotgun in a motor vehicle shall allow any peace officer who is empowered and acting under the authority granted in section 33-6-101 to enforce articles 1 to 6 of this title 33 to inspect the chamber of any rifle or shotgun in the motor vehicle. For the purposes of this section, a “muzzle-loader” shall be considered unloaded if it is not primed, and “primed” means having a percussion cap on the nipple or flint in the striker and powder in the flash pan. Any person who violates this section is guilty of a misdemeanor and, upon conviction thereof, shall be punished by a fine of one hundred dollars and an assessment of fifteen license suspension points.