This Felarx is using for Archon [Hunt] Showdown, it will also work perfectly with any other suituation.
Replace the element with anything you rather need, the exilus mod is not needed as well cause nothing seems worthy or must.
For evolution:
Evolution II: Kinetic Baffle: -50% Weapon Recoil
Evolution III: Evolved Autoloader: +50% Magazine Reloaded/s when Holstered
Evolution IV: Racking Wrath: +20% Status Chance, -10% Critical Chance
Evolution V: Devouring Attrition: 50% chance to deal 2000% damage on non-critical hits
Mesa build:
https://overframe.gg/build/364155/
Videos:
https://www.youtube.com/watch?v=QFYGw0bDDEI