Per Hotfix 39.1.2, we lost the Blast interaction. It turns out that was unintentional, so the Blast/Electricity build no longer works. I just swapped Blast out for Viral and dropped [Galvanized Scope] for [Amalgam Serration]. I'm not great at hitting a bunch of headshots, so it just made sense to me to do it this way.
Radiated Reload is for some much-needed QOL. It can easily be dropped for any other mod combination or [Hammer Shot]. [Galvanized Aptitude] is okay, but it has no effect on the lightning strikes.
Now that the Blast interaction is gone, this wants enemy grouping even more. Then again, it wanted that from the start.