The Fire Rate is 2.17, not 1.73 due to Semi-Shotgun Cannonade
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Weapon Information
The Kuva Zarr is the Kuva variant of the [Zarr] with increased overall stats of Base Damage, Critical Chance, Status Chance, Fire Rate, Magazine Size, Ammo Capacity, but has a Slower Reload Speed with a Mastery Lock of 15.
The Kuva Zarr can be obtained by vanquishing a Kuva Lich or by trading from a player a Lich they conquered.
The Kuva Zarr comes with 3 V Polarity Slots, making the builds in this guide require 3 Forma.
Tenet Element
The Kuva Zarr has the option of having a Bonus Tenet Element based off the Progenitor Warframe chosen when spawning a Kuva Lich. For this guide I suggest Toxin, allowing the weapon to be strong against all factions, and allowing for mostly positive flexibility.
Advantages
Cannons explode in a 7 meter radius upon impact which then splits into 6 smaller bombs.
Pinpoint Accuracy.
Initial Hit and Explosion apply Status separately.
Reloads one cannon at a time, but can be interrupted to fire.
Barrage Mode has an innate 1.6 meter Punch Through with an innate 10 Multishot.
Disadvantages
Explosions inflict Self-Stagger with Linear Damage Falloff from 100% to 30% from Impact Point.
Cannon Mode has Travel Time with arching.
Poor Ammo Capacity, Magazine Size, and Ammo Efficiency.
Corpus Build
Element Focus: Viral/Magnetic
Flex Slots: [Primed Firestorm]

Grineer:
Element Focus: Viral/Slash Procs
Flex Slots: [Primed Firestorm]

Infested & Deimos:
Element Focus: Blast or Viral/Heat against normal Infested
Flex Slots: [Primed Firestorm]

Orokin
Element Focus: Viral/Slash Procs
Flex Slots: [Primed Firestorm]

The Murmur
Element Focus: Viral/Electric or Viral/Slash Procs
Flex Slots: None, unless using Viral/Slash Procs set

Narmer Build
Element Focus: Toxin
Flex Slots: [Primed Firestorm] or [Bladed Rounds]

Scaldra Build
Element Focus: Viral/Slash Procs
Flex Slots: [Primed Firestorm] or [Bladed Rounds]

Techrot Build
Element Focus: Gas/Magnetic
Flex Slots: [Primed Firestorm] or [Bladed Rounds]

Mod Slot Flex
Split Chamber - Flex out Galvanized Chamber.
Galvanized Scope - Flex out Primed Firestorm or Critical Delay to allow for more Critical Chance, but one must focus on switching modes to keep the stacks.
Cryo Rounds - Flex out Primed Cryo Rounds.
Firestorm - Flex out Primed Firestorm.
Bladed Rounds or Rifle Elementalist - Flex out Primed Firestorm if one doesn't want it.
Bane Mods - Flex out respective Primed counterparts.
Bladed Rounds - Flex out build's Bane Faction Mod, if one doesn't like using Bane mods.
Kuva Zarr Enhancing
Damage Enhancement | [Rhino]'s Roar, [Nova]'s Molecular Prime, [Mirage]'s Eclipse, [Mesa]'s Shooting Gallery, Saryn's Toxic Lash, Equinox's Rage, Wisp's Haste Reservoir, Banshee's Sonar, Chroma's Vex Armor, Cyte-09's Resupply, Garuda's Passive.
Critical Enhancement | [Harrow]'s Covenant, [Volt]'s Electric Shield, Zephyr's Passive, Dagath's Grave Spirit, Gyre's Cathode Grace, Adarza Kavat with Cat's Eye, Smeeta Kavat with Charm.
Utility Enhancement | Gauss' Redline, Chroma's Elemental Ward in Toxic Alignment, Volt's Speed.
Arcane Synergy
Arcane Rage - Warframe Arcane | Increases Primary Damage upon a Headshot, but easier to trigger in Barrage Mode.
Arcane Avenger - Warframe Arcane | Increases Critical Chance upon being damaged.
Arcane Primary Charger - Warframe Arcane | Increases Primary Damage upon a Melee Kill.
Arcane Arachne - Warframe Arcane | Increases Damage upon Wall Latching.
Riven Synergy
Ideal Positive Stats - Critical Chance, Critical Damage, Fire Rate, Base Damage.
Ideal Negative Stats - Weapon Recoil, Zoom.
Ending
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