36" accuracy is 100 feet, 200 feet per second
48" accuracy is 150 feet, 250 feet per second.
60" accuracy is 150 feet, 250 feet per second
Every time you add a 24" extension to one of these sizes, you'll be increasing your accuracy by 50 feet and your feet per second by another 150 feet per second.
Blowguns? Who cares. I would have LOVED one of these when I was a kid (basing that on the fact that I'd have a great time with one now).
It can shoot 70 feet!? Chasing neighbourhood dogs, neighbours, neighbour's friends, their dogs. The list would be endless.
Andrew
You'd need Monica Lewinsky to fire the thing!