Why ARE butterfly knives are illegal in Washington?

Butterfly knives, or balisongs, are illegal in Washington due to their classification as "dangerous weapons" under state law. The law prohibits the possession, sale, or manufacture of these knives because of their potential for misuse and the ease with which they can be concealed. The regulation aims to enhance public safety and reduce incidents of knife-related violence. Consequently, individuals found with butterfly knives can face legal consequences.