Consider me unimpressed. First, there just isn’t a ton of energy in that “round”. They’re claiming Second, the disk shape of the projectile means that it’s going to be impossible to aim effectively. That thing is going to have significant vertical dispersion even at very short ranges. It’s a toy.
| It's a toy. An extremely dangerous toy.
I’d argue it’s less dangerous than, for instance, a 5” racing quadcopter.