Heavy Spam Crit [Quassus Prime]
Perma x6 Combo as long as you're killing stuff

[Galvanized Steel] can be swapped with [Sacrificial Steel], in which case Melee Duplicate would also be changed for whatever alternative suits your melee frame best.
Stance mod is also interchangeable for [Slicing Feathers], it doesn't really matter.

The performance shown in overframe might not be accurate due to the ranged heavy attacks throwing individual projectiles rather than a full cone of damage

I am currently testing other builds this one may not be definitive