The type of slingshot you mentioned is illegal in New Jersey, New York, Massachusetts, and Rhode Island. Various municipalities ban slingshots as well. Those statutes are chargeable too: Teen charged with slingshot possession .
Is slingshot illegal in Australia?
You can legally purchase a slingshot in Queensland, the ACT and Tasmania, but not in NSW, Victoria, South Australia, Western Australia or the Northern Territory. ... Homemade slingshots for use by a child in the course of play are permitted. Victoria: Slingshots are classified as a prohibited weapon.Mar 24, 2014