First off this show is an controlled experiment. Which, IMO throws the "realistic" element out the window. But it dose make for some good entertainment. In this "reality" it will be interesting to see how this plays out.
This series is about a group of 10 survivor after a major pandemic, SHTF, post apocalyptic world, etc... From the first episode I can say there are no firearms seen (the group is in L.A. and we all know CA policy). One thing that has me scratching my head is that 7/10 of the survivor have bachelor degree or higher. I think this is not a representative sample of the LA population. Thus, leads us back to my first statement.
Note: state away from the Discovery forums. There are a lot of self-proclaimed firearms 'experts' spewing wisdom. So much wisdom it is enough to warrant self termination.