What does House Bill 102 mean for schools in Montana? MTN and last updated 2021-02-23 00:34:32-05 GREAT FALLS â Permitless concealed carry of firearms - also known as constitutional carry - is now legal in Montana, following Governor Greg Gianforte signing House Bill 102 into law last week. The new law allows people to carry concealed firearms without a permit in most locations, and with a permit in state and local government facilities such as the State Capitol Building. But what does that mean for the stateâs schools? Schools in the Montana University System face a much different future than public K-12 schools.