This primary weapon is steel path ready. Ideal if, like me, you don't want to aim, but want something else than [Ignis Wraith] :)
Viral + fire is the most powerful combo if you don't want to switch mods every time you fight another faction, or if you go against corrupted ennemies.
You can bother to polarize one more slot and go for [Primed Reach], if you care, but it's not really necessary in my opinion.