I'd tend to agree with those preferring a rifle, but what if buying and keeping a rifle is not a good option? What if you do not want to endure the permitting process in a place as onerous as NYC?

If you want to keep something in your home and you live here, you need to consider soemthing else. Of course, a wrist rocket is also not legal. I think you can own a slingshot, but not with a wrist brace.