Q. If I carry in a private business that bans firearms or bans concealed carry of handguns, am I guilty of criminal trespass?
A. Sometimes. You would have to be asked to leave and then decline to do so, or return to premises from which you had been previously told you were not welcome to visit. Ignoring a sign at a private business that states firearms are prohibited is not automatically a trespass in Colorado.
18-4-504 Third Degree Criminal Trespass
(1) A person commits the crime of third degree criminal trespass if such person unlawfully enters or remains in or upon premises of another.
(2) Third degree criminal trespass is a class 1 petty offense, but:
(a) It is a class 3 misdemeanor if the premises have been classified by the county assessor for the county in which the land is situated as agricultural land pursuant to section 39-1-102 (1.6), C.R.S.; and
(b) It is a class 5 felony if the person trespasses on premises so classified as agricultural land with the intent to commit a felony thereon.