It takes a great deal of skill and hand-eye coordination to use a wristrocket accurately and hit your target. It’s not like a firearm where you sight down the barrel. You have to sight down your arm, and your arm has to be steady. I doubt very much if there are any laws regarding them, because they are below the radar. Kinda like crossbows.
As kids, we were all pretty good with wristrockets. We’d even lob M-8o’s.
I am a slingshot shooter from way back...:) When I moved to Japan when I was eight, I made my first slingshot that worked. (I made plenty that didn’t, and had lots of welts over time on my arms and face)
Then when I moved to the Philippines a few years later, me and my friends wanted to get machetes. We liked to go out and hike around in the jungle (which was so dense we got lost for four hours only about 100 yards from the road...) and we thought machetes would really complete our gear.
All the Filipino yard boys had their own, and sometimes they did some pretty neat looking work on the handles. The guy who worked on our yard was very cool, and explained to me how he and his friends made them from old leaf springs.
He showed up one day and gave me one. Can’t even remember his name.
Funny thing is, nobody said anything to me. My mom and dad knew I had it, but they didn’t think there was anything wrong at all with me having one. Heh, kind of funny now when I look back at it.
Can you imagine some kid coming home today and telling his mom that his 11 year old friend had his own machete!
Actually, there are all kinds of laws regarding crossbows. Consult your individual state.