The basic idea of this knife is that if you are diving and need to stab a shark you can inject it with CO2 so it floats away form you. Which is awesome if your a diver. This dud however wanted to show what it would do so he put some eggs in a bag inside a block of ballistics gely. Looks like a messy way to kill the undead. And all you might end up doing is blowing it up until it explodes.
So unless you are planning on doing lots of diving after the apocalypse I might leave this item off my survival gear list.
