I went out of my way to actually masterwork Sunshot when I knew how tedious it would be, only to find out a legendary weapon would be better at generating orbs of power than this. I have not been able to generate a single orb of power with this weapon even after getting it's masterwork objective finished. For sunblast kills to be a prerequisite for Masterworking the thing, you would think they could at least generate orbs of power when you're able to get kills with the explosions. Even if I prime 5 enemies or more, and chain the explosions so they're all killed, not a single orb drops.