SOOOO,

Like (almost) all the Wraith Weapons, the [Twin Vipers] are not .... privileged...

Let's see why :

a reaaallly high ROF (Rate Of Fire) of 25
a low magazine of 40
a looong reload time of 2 second
impact based damage
a decent crit chance 19%
an average crit multiplier of 2
a low status chance of 9%
low based damage of 19
an annoying recoil

You see the problem ? you got it right ! AMMO EFFICIENCY :

ROF is the best and worst asset of this weapon because you could have a tremendous DPS but at the cost of reloading every O.5 second.

HOW TO AVOID RELOADING 24/7

1) Have a better magazine : you could play [Ice Storm] or Primed Sliped Magazine and remove both the riven and faction damage or [Lethal Torrent] if you are too lazy
2) Lower the ROF : remove [Lethal Torrent] and play [Creeping Bullseye] and find a riven with a minus ROF
3) reload faster : remove faction damage or [Lethal Torrent] and play [Primed Quickdraw]

Well you understood it : this weapon is all about sacrifices and you cannot spray the ennemies as you would do with a [Soma]

SECOND PROBLEM: THE DAMAGE, HOW TO MAKE IT SP VIABLE ?

Well according to Warframe's Meths it is better to have a LOT of multishot and a bit of everything else in order to benefit from full bonuses in the damage calculation so :

1) MULTISHOT MULTISHOT AND MORE MULTISHOT : [Galvanized Diffusion] is a must. [Lethal Torrent] well.... as you wish... but I advice it
2) Raw damage with the Arcane Secondary Deadhead or Cascadia Flare if you play with fire~~ + Galvanized Savy~~
3) Elemental Damage with Galvanized Savy and

• Corrosive Damage for Grinner (yes viral/slash is better but I will explain it below why we do not go for viral)
• Magnetic or Electric for Corpus
• Fire/Gas for Infested
• Corrosive for Corrupted

4) Critical chance + Damage with the Riven and [Primed Pistol Gambit]
5) ROF... welllll you already have it!
6) Faction damage if it doesn't bother you to swap between each mission. If you don't want to, then go for Primed Quick Draw to play comfortably

THE MAGIC SOLUTION

As you know you will have a tough time reloading often and complaining about the magazine.

So let me present to you: Arcan Pistoleer, on headshot kill, +60% chance for 102% ammo efficiency for 12s

Install Arcan Pistoleer on your warframe and tataaa you can go brrrrr brrrr for 12 seconds :)

The DO'S and DON'T

Don't try to go for viral and slash with [Hemorrhage] as the high ROF will not let you time to put dots like bleeding on enemies + you will lose 1 precious slot. It is not worth it.

Don't play low fire rate if you play Arcane Pistoleer as you will lose a ton of dps

Feel free to go for both 60/60 elemental damage or full 90% damage in this build. I kept only 1 Naramon polarity as I find them quite restrictive. As a result, I did a mix of both in order to keep a polarity-free slot so it could help me try new stuff.

If you really want this weapon to [Shred] enemies, buff it with your warframe, either [Rhino], [Mirage], or any other warframe that can buff your damage or elemental damage on your weapon.

I don't recommend Secondary Merciless as 4s is sometimes not enough to kill an enemy/ stack this arcane correctly

The RIVEN

if you don't want to play with Arcane Pistoleer, both stats obligatory (to me) to make this weapon works are:

+multishot
-ROF

If you play with Arcane Pistoleer, my go-to would be
+multishot
+Critical Damage/ Critical Chance

other buffs should allow you to free 1 or 2 slots so you could whatever is missing in your build : magazine size / reload speed / critical chance/ critical damage / flat damage

my Riven is correct but the minus reload speed does hurt a lot, I am trying to roll it for the better. I will keep you updated.

If you liked that in-depth guide, please feel to vote it/ comment it !

Taaataaa Lovely !

UPDATE

Change the riven + swap [Galvanized Shot] for [Primed Heated Charge]

As I am playing them, I remarked that [Galvanized Shot] isn't worth it as now I have really low status chance on my build so i can't proc it consistently + already a riven that is giving me a huge raw damage bonus worth, more than [Galvanized Shot] with 3 different status (80 x 3 = 240%)

That is why i swaped it for more elemental damage to avoid diminishing return when piling raw damage mods

I also like to play [Combo Fury] with the [Glaive Prime] to solve the reload speed and to give myself extra magazine size.