Colorado Revised Statutes Title 18. Criminal Code § 18-12-114. Secure firearm storage required--penalty--exceptions

(a) The person carries the firearm on his or her person or within such close proximity thereto that the person can readily retrieve and use the firearm as if the person carried the firearm on his or her person;

(b) The firearm is kept in a locked gun safe or other secure container or in a manner that a reasonable person would believe to be secure and a juvenile or resident of the premises who is ineligible to possess a firearm does not have access to the key, combination, or other unlocking mechanism necessary to open the safe or container;

(c) The person properly installs a locking device on the firearm and a juvenile or resident of the premises who is ineligible to possess a firearm does not have access to the key, combination, or other unlocking mechanism necessary to remove the locking device; or

(d) The firearm is a personalized firearm and the safety characteristics of the firearm are activated.

(2)(a) A person commits unlawful storage of a firearm when the person fails to responsibly and securely store a firearm, as described in subsection (1) of this section, upon any premises that the person owns or controls and the person knows or reasonably should know that:

(b) Unlawful storage of a firearm is a class 2 misdemeanor.

(c) It is an affirmative defense to the offense of unlawful storage of a firearm that a juvenile gained possession of, and used, the firearm for the purpose of exercising the rights contained in section 18-1-704 or 18-1-704.5 or in defense of livestock.