Echoes of duviri changed puncture status effect to apply an extra flat +25% crit chance to the grakatas... galv crosshairs or not, this is a nice buff

This build heavely depends that you are able to proc heat status effects, if the unit is inmune to it... This build will be completly ineffective

You dont need to bring [Hornet Strike] for this build, what's important is [Primed Heated Charge], [Galvanized Shot] and cascadia flare
Combining [Lethal Torrent] with the build, will grant you a fully stacked cascadia flare buff in almost 2 seconds... Making it very effective at dealing tons of damage until you run out of ammo

Reload will still be slow, so [Ice Storm] can help a bit without losing viral as well as weighting your heat procs since it has lower cold damage than [Frostbite]
(Update) I've seen a lot of problems while running viral on this gun, specifically... Heavy gunners... Corrosive gives the same amount of damage against most enemies and doesnt struggle against said enemies, so just use that

With the introduction of "Secondary Encumber"... [Twin Grakatas] can benefit a lot more from it... However, despite being able to deal much more damage with it's viral and magnetic... You will lack raw damage for things like arctic globes and waste more ammo on it...
Very powerful option, but lacks raw damage... You can try to swap [Lethal Torrent] for [Hornet Strike] though

Can swap [Lethal Torrent] for [Primed Quickdraw] on both builds for easier use