This build is pretty simple, I rather use [Galvanized Chamber] than [Split Chamber] for extra multishot every kill. I use hunter munition because the [Acceltra] has 96% critical chance so if the main damage doesn't kill the enemy, the slash proc definitely will end their career.

I mostly use viral damage but you can switch into others however don't forma one of the slots into Vazarin (D) if you're the type of changing into other elements

I know I have reduced fire rate but I same a bit of ammo and am lazy to forma the exilus just for regaining ammo but that increased critical chance is worth it.

P.S. this weapon somehow deals high damage to necramechs.

P.S. again primary merciless arcane adds 360% extra damage and is definitely worth farming it