Knuckles, baton and club laws in Iowa

Our search found no Iowa law restricting the sale or shipping of knuckles, batons, clubs, nunchaku and throwing stars.

What we searched

Iowa Code ch. 724 https://www.legis.iowa.gov/docs/code/724.rtf (searched knuckle, billy, blackjack, bludgeon, slungshot, throwing star, nunchaku, baton, club, minors)
Iowa Code 702.7 https://www.legis.iowa.gov/docs/code/702.rtf

No Iowa sale/possession/minor-sale restriction on impact weapons; 724.4/724.4E are carry offenses.