Federal judge pulls illegal 'gravity knife,' flicks it open in court

Judge Katherine Forrest was conducting a standard "flick test" to determine whether weapon should be illegal in New York.

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Gravity Knife Possession Is Legal in New York!

Why Are Gravity Knives Illegal? Their Mechanism and Legal Status

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Federal Judge Rules New York's Dumb 'Gravity Knife' Law Is Unconstitutionally Vague

Knives and the Second Amendment, by David Kopel, Esq

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Possession of a Gravity Knife Is No Longer a Crime in New York