In NH there is no such thing. We only have a conceal carry permit and even that's voluntary at the moment. You can't shoot alone, like the other person said, unless you bring our own gun. But you can shoot whatever of you're not alone. It's a suicide prevention policy. You will need to sign a waiver, which can be found on their website.
No. But you can't rent a gun unless you come with a gun owner or come with a gun you own. You do have to fill out a waiver.
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