In the State of Michigan, you have to be careful about carrying a gun or other weapon. There are specific rules about how and where you can have a gun or other weapon on your person or in your car.
Carrying a Concealed Weapon
If you are charged with carrying a concealed weapon, it may be because you were carrying a gun without a Concealed Pistol License (CPL). The law states that you cannot carry a dagger, dirk, stiletto, a double-edged non-folding stabbing instrument of any length, or any other dangerous weapon, except a hunting knife adapted and carried as such, concealed on or about your person. This includes carrying a weapon in a car or vehicle operated or occupied by you. However, you can carry a weapon in your dwelling house, place of business, or on other land possessed by you.
With respect to pistols, you cannot carry a pistol concealed on or about your person or in a vehicle or car operated or occupied by you, except in your dwelling house, place of business, or on other land possessed by you, without a license to carry the pistol. If you are licensed to carry a pistol, you cannot carry the pistol in a place or manner inconsistent with any restrictions upon such license. Carrying a concealed weapon is a felony punishable by up to 5 years in prison or by a fine of not more than $2,500.