Also like to pint out that it acts as a toxin with "immediate", but immediate toxins aren't immediate at all, they take effect at the end of the turn. So we have a maser grenade, an energy weapon, that no one is going to feel until 3 seconds later? Usually that's about half a combat.
I doubt that's intentional. If it is, this winds up largely a cinematic weapon for crowd control, not something that will make sense on the scales runners fight.