A fun meme build with 190% fire rate to make the primary fire at least somewhat fun to use. Headshots are nice and easy to rack up, and the charge time before the big blast is also minimized in the Incarnon form. The downside would obviously be that you blow through your Incarnon mode extremely quickly.

If you can live without the +40% fire rate from [Accelerated Isotope], it frees up a slot along with [Heated Charge] to mod for whatever element combo you want. I personally just buff my damage with external buffs like Roar, Nourish, Sonar or [Xata]'s Whisper so that I can keep the fire rate. If you fully defense strip enemies your damage types don't matter anyway.

I don't even know if [Ruinous Extension] works with the Incarnon mode. I just slot it there cuz it happens to fit lol.

For the Incarnon evolutions II and III, go for more fire rate and reload speed. The last two come down to personal preference. The ones I picked are +2.5 punch through on kill and +200% damage on punch through hits for their easy upkeep.