Are switchblade knives legal in arkansas?

They are not legal to carry, though you can own one, best to consult an attorney on ownership, you could be charged with "5-73-120 Carrying a weapon" if not within one of the exemptions specified.

For more information on Arkansas Law visit the Arkansas Legislature's Website and click on the "Search/View Arkansas Code" link on the lower left side of the page, you will be directed to a Lexis Nexis page.