The barrel appears very thick to handle the pressure but I'm sure it wears slightly after every shot. I'm very curious how many rounds it can fire before breaking.
This is the first model and anyone if free to try it and contribute. The design WILL improve quickly so I'm sure Chuckie and his ilk are filling their pants right now.
Still, a criminal will resort to it only if there isn’t an easier to get firearm available. I wonder what the bolt is made of.