Frags can't kill you I think the AEGIS, I ponder. Maybe it does, but I've never experimented so. Radiation grenades I know can kill you in a very brief amount of time.
I think the frags drop after a period of time, or something like that. I mess around with the ageis with other people now and then. One minute, Im holding onto a frag, and then, out of nowhere, I get that fancy little suicide message on my screen.