This was tested on lvl 195 Steel Path Exo Gokstad Officers but it works amazingly well in normal gameplay as well.

Here’s the mod in question:

It can be obtained in the current Nightwave.

To summarise, as soon as you get the first kill and don’t miss, Battacor will work as a very potent laser cannon of death. Basically what Opticor should be. Maybe one day…

Anyway, here’s my build:

The Riven is +CC +CD +Toxin, which is now totally unnecessary thanks to Sentient Barrage offering much better values.

As for Battacor itself, you can mod it for the usual Viral+HM, or what I did is Corrosive+HM with Nourish. Just be aware that kills from HM do not charge it’s alt fire (it used to though so I’m hoping it’s a bug DE will fix).