Mont. Code Ann. § 45-8-326
Immunity from liability
45-8-326 . Immunity from liability. A sheriff, employee of a sheriff's office, or county is not liable for damages in a civil action by a person or entity claiming death, personal injury, or property damage arising from alleged wrongful or improper grant of, renewal of, or failure to revoke a permit to carry a concealed weapon, except for actions that constitute willful misconduct or gross negligence.