This build is essentially creating a budget [Arca Plasmor]. However, we still keep our Secondary Auto mode not only usable, but completely as viable as the Semi mode. This is the second part of my Essentials Build, because the [Fulmin] has many options that make it a good choice across many different mission types. It can be silenced without the use of a mod, it has perfect accuracy and no fall off for long range engagements with the automatic mode, and heavy punching power with the Semi mode.

Damage package. Here we have [Galvanized Chamber] and [Galvanized Aptitude]. Because this weapon has Electricity Damage already on it, Aptitude is a pretty good mod to take.

Element Package. [Rime Rounds] and [Malignant Force] for Viral. Must have for a standard crit build.

Crit Package. [Galvanized Scope], [Critical Delay], [Vital Sense], [Hunter Munitions]. This weapon suffers no downside from [Critical Delay], in fact, it benefits from it as you don't run out of ammo as quickly, allowing you to be more efficient with your ammo. Headshots are very easy to land with the automatic modes perfect accuracy.

Exilus Slot. Use either [Hush] or [Vigilante Supplies]. [Hush] if you want a completely silenced weapon. [Vigilante Supplies] if you want a chance to upgrade your crits.

Arcane Slot: I like Primary Merciless here. Even a 0.2 second decrease in the Reload Period is noticable. The damage buffs are also very good. However, Primary Deadhead is also a good choice. This is up to personal preference.

Riven Stats:
1. Critical Chance / Damage
2. Toxin / Cold or Heat in combination with either of the above.
3. Magazine Capacity.

Downsides to look for:
1. -Zoom
2. -Slash (The weapon has no innate slash damage, -Slash is harmless and does not affect [Hunter Munitions])