(a) The department of justice, the department of transportation, and the employees of each department; clerks, as defined in sub. (11) (a) 1. a., and their staff; and court automated information systems, as defined under sub. (11) (a) 1. b., and their employees are immune from liability arising from any act or omission under this section, if done so in good faith.
(b) A person that does not prohibit an individual from carrying a concealed weapon on property that the person owns or occupies is immune from any liability arising from its decision.
(c) An employer that does not prohibit one or more employees from carrying a concealed weapon under sub. (15m) is immune from any liability arising from its decision.
(d) A person providing a firearms training course in good faith is immune from liability arising from any act or omission related to the course if the course is one described in sub. (4) (a).