Shoot, overload and have galvanized do the work, problem solved

Secondary encumber gives you the statuses needed for this weapons to really work now

To be more specific on what encumber does aside from the other arcanes is to give you damage boosting status effects that you wouldnt usually have, like magnetic and viral
Due to the high fire-rate and status chance of the afuris prime, it becomes more likely to get those neat statuses on match-ups that you wouldnt be able to beat... And you receive so many of them that it wont matter bringing cascadia flare to make up for the damage, [Galvanized Shot] already grants you damage and it will keep your damage on
(And thanks to the new puncture status effect, you receive an free +25% crit chance along with a small chance to apply cold procs which give some small crit damage)

You can either do viral or corrosive, i like corrosive better on these because you can actually get a better benefit from a single viral proc from encumber

Despite how good this build is... There's some lot of weaknesses that only a raw damage increasing riven can fix due that encumber and galvanized shot lacks any damage outside statuses...
Meaning the WEAKNESSES are:
-Low starting damage
-Arctic globe shield
-Overguard
-Status inmune units
-Rgn dependant

If ypu or someone is running the full mecha set, then i can tell you that secondary encumber and [Primed Heated Charge] can actually make a pretty good nuke if you status inherit an enemy that can take like 30 of your [Mag] size, it's pretty fun to use