I just picked up an L61 Longbow Quasar Mod (the LLM's have been crapping oranges tonight), and my god, this thing works *righteous* magic against stalkers. Drains their shields and stops them in their tracks. Unbelievable. Wish I had known that a week ago.
I'll dupe one in exchange for some L61 shields, if anyone's interested (I'd love an L61 Evolution/Firehawk in particular)...GT is Ogami Itto.
Yesterday I was tossing Quasar's with my Mechro specced for electric damage while a Gunzerker tossed Fire Bee's with the skill that let him throw two at once and it was a thing of beauty against stalkers in the wildlife preserve. :D