Well IF we had one we surely won't let kids shoot at it (regardless how durable it might be).

On another note, a D90 is mounted on that thing. And knowing how accurate those things are (I have one) you can walk right in front of it while it's shooting and all the shots would miss you. The D90 shoots all over the place.

The only explaination to it is that they modifed the D90 (because in stock form the gun is useless (the barrel is only about 2 or 3 inches long, after that the bb just starts to bounce around inside of the gun before it escapes.