Viral Slash build for endurance. [Lex] Incarnon has forced impact which means Hemorrhage has a 70% chance to apply a bleed proc which bypasses armor.

EVOLUTIONS

Evo II: Hoplite Virtue - +dmg and +dmg from shield break for 8s
Evo III: Personal preference - Ready Retaliation gives quick reload AND transform speed, but lex talionis gives free -80% recoil which stacks with steady hands to give zero recoil
Evo IV: Critical Parallel - Increase base CC to 54% and CD to 3.4x

MOD BREAKDOWN

Galv Shot - added back in because although it ignores base dmg evo 2, the evo only adds 2% of total damage.
Galvanized Diffusion - mandatory for multishot giving 3.3 final multishot
Primed Pistol Gambit - boosts CC to 155%
Primed Target Cracker - boosts CD to 7.1
Viral 60/60 mods - Modded viral status boosts all damage to health, which includes the bleed proc on the same shot that created both statuses. [Lex Prime] has a high base status chance of 44%, with a final SC of 132% after Galv Shot and Virals. This means with 3 multishot, you are getting approximately 2-3 viral procs per shot. This boosts the subsequent slash proc by over 2x (up to 4.25x at 10 stacks).
Hemorrhage - 70% chance to proc bleed on forced impact. Its basically impossible to exceed 2.5 fire rate from the base of 0.67. Even stacking lethal torrent, anemic agility and arcane velocity, you will only reach 2.48 fire rate.
Primed Expel Corrupted/Grineer - Primed faction is optional but double dips DoTs for up to 2.4x multiplier.

Secondary Merciless is used as bleed proc kills cannot headshot and consistenyl proc Secondary Deadhead.

Cascadia Overchage is an alternative that lets you get red crits AND allows you to drop [Primed Pistol Gambit] for [Lethal Torrent] (can keep [Pistol Gambit] if you prefer guaranteed red crits over higher DPS). This requires a consistent method to keep overshields (e.g. augur mods, pillage, condemn, [Mag] crush, [Protea] shield satellite cetc).

Ideally use with external fire rate buffs since it is SO SLOW.
If running NOURISH, drop viral mods for [Lethal Torrent] and Anemic Agility.

FLEXIBLE OPTIONS

If you prefer you can drop either the VIRAL MODS or the FACTION MOD for:
Lethal Torrent - more multishot and firerate
Anemic Agility - more fire rate
Galvanized Crosshairs - allows you to red crit
Creeping Bullseye - if you dont own primed pistol gambit, use this
Hornet strike - if you don't own galv shot
Augur Pact- if you have free slot with no other options available