Are butterfly knives illegal in California?

Under Penal Code 21510 PC, butterfly knives are considered a form of a switchblade and are illegal in California. Specifically, it is a crime to carry, possess in public, sell, or otherwise transfer a butterfly knife. Convictions are misdemeanor offenses that carry up to 6 months in jail. Are butterfly knives illegal in California? In

Nessel, attorneys general support Hawaii's push to reinstate knife ban

Are butterfly knives illegal in California?

Legality of Balisongs : r/balisong

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In which states are butterfly knives illegal? Why are they illegal? - Quora

Are Butterfly Knives Illegal?

Why Butterfly Knives (Balisongs) are Illegal

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Are Switchblades Legal in California? Not Generally