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Amendment II
A well regulated militia, being necessary to the security of a free state, the right of the people to keep and bear arms, shall not be infringed.
The right to keep a gun for the security of a free state is not a hobby or recreational in any way. I will always agree you are allowed to have them. But that doesn't mean you don't have to have a permit or license to use them outside of use during your time in a well regulated militia.