The Amprex rifle fires a continuous beam of high voltage electricity that arcs among nearby enemies. This weapon excels at crowd control.

The Amprex is a IconCorpusB.svg Corpus beam rifle that fires a continuous stream of Electricity DamageDmgElectricitySmall64.png Electricity arcs that can chain between units, making it a devastating crowd control weapon.


This weapon deals Electricity DamageDmgElectricitySmall64.png Electricity damage.




The Amprex's blueprint can be researched from the Energy Lab in the dojo.

Manufacturing Requirements
Time: 24 hrs
Rush: Platinum64.png 35
MarketIcon.png Market Price: Platinum64.png 225 Blueprint2.svg Blueprints Price:Credits64.png50,000
Energy Lab Research ClanAffinity64.png 3,000
Time: 72 hrs
Prereq: Dera
Ghost Clan x1   Shadow Clan x3   Storm Clan x10   Mountain Clan x30   Moon Clan x100

This weapon can be sold for Credits64.png 7,500.


  • When fired at an enemy, the beam will chain to the closest enemy within 10 meters of the initial target. From there it will chain again, up to a maximum of 3 chains in total. A chain will do 0.5n times the main beam's damage, where n is the chain number. Any enemy caught in the width of the beam will also be damaged.
    • The damages are : 100% for the main target, 50% for the first in the chain, 25% for the 2nd, and 12.5% for the 3rd.
    • Headshotting the original target does not affect the chain damage.
    • The beam will not chain to a Nullifier through its shield should it connect with a target outside or partially enclosed by it.
    • The beam can also continue to chain to enemies even if targeting a dead enemy or an enemy who is dead but in a dying animation.
    • Additional electrical arcs are also emitted, striking randomly around the player. However, these stray arcs are purely visual in effect.
  • Compared to the SynapseU10InfPrimary.png Synapse, the Amprex deals more damage and it continuously arcs to other enemies, making it more effective against crowds. Use the Synapse for single targets and the Amprex for crowd control.
    • The fire rate of Amprex is the same as Synapse, and it deals slightly more damage, however it has a 2.6s reload speed, nearly double the 1.5s reload speed of the Synapse.



  • After the clan obtains the Energy Lab, it will take exactly 12 days to research this weapon.
  • The Amprex's name is a portmanteau of the words Ampere (the base unit of the International System of Units used to quantify electric current) and the word Rex, which is the Latin word for king.
    • The word ampere itself is named after a French mathematician and physicist, André-Marie Ampère, who's also considered to be one of the fathers of classical electromagnetism, most commonly known for Ampère's Circuital Law.
    • Like the Flux RifleCorpusLaserRifle.png Flux Rifle and DetronDECorpusHandCannon.png Detron, Amprex does not conform to the common Corpus weapon name scheme; two syllables ending in 'a'.
  • The weapon shares its similarities on its battery components with TetraDETetra.png Tetra.
  • This is the third Primary weapon that deals purely Electricity DamageDmgElectricitySmall64.png Electricity damage, after the LankaCorpusSniperRifle.png Lanka, and SynapseU10InfPrimary.png Synapse.
  • This is the second clan weapon that does not need a Forma in its construction.
  • Hatches on the side of the Amprex slowly open up during firing, spreading vanes underneath. This animation is a visual indicator of the weapon's magazine capacity, with the vanes spreading out more the closer the magazine is to empty. The hatch closes upon reloading.
  • This is the first weapon in Energy Lab whose duplication costs 50,000 credits.
  • After Update 15.13 (2015-02-05), the chained beams were changed to be affected by Sinister Reach12?cb=20190608095452 Sinister Reach as well. As of Update 22.14 (2018-03-01), this is no longer the case.


Amprex Skins Edit

Patch History[]

Update 22.14 (2018-03-01)

  • Fixed Beam weapons not being able to damage enemies (alive but in a ragdolled state) when being affected by certain ‘crowd control’ Abilities.
  • Damage now ramps up over 0.6 seconds and after moving off target there is a delay of 0.8 seconds before it starts to decay over 2 seconds.
  • All Beam weapons now start their Damage ramp up at 20% (instead of 10%).
  • The Multishot chance should now apply more consistently with Beam weapons.
  • Weapon Range Mods (like Sinister Reach) no longer affect the distance of chains for chainable Beam weapons (like the Amprex). Main Beam distance is still affected by them.
  • Fixed Beam weapons continuously firing when quick Meleeing.
  • Chain Range increased from 7.5m to 10m.
  • Damage reduced from 24 to 22.

Hotfix 22.13.4 (2018-02-22)

  • Increased the Beam weapon Damage ramp up time from 0.8 to 1 second.
  • Fixed Beam weapon Damage ramp up not happening per target.

Hotfix 22.13.3 (2018-02-21)

  • Perfect accuracy and high fire rate is balanced by limited range and damage ramping up from 10% to 100% over 0.8 seconds when firing and decays back to 10% over 1 second after stopping.
  • Mastery Rank increased from 5 to 10.
  • Damage increased from 7.5 to 24 .
  • Fire Rate decreased from 20 to 12 .
  • Status chance changed from 20% per sec to 22% per tick of damage.
  • Critical chance decreased from 50% to 32%.
  • Critical Damage increased from 2.0x to 2.2x.
  • Max ammo capacity increased from 540 to 700.
  • 0.5 Ammo consumption per tick of damage.
  • Aimed Zoom reduced from 2.23x to 1.4x.

Update 19.5 (2016-12-22)

  • Magazine size in Conclave reduced from 100 to 40.

Update: The Index Preview (2016-10-20)

  • The Amprex can now be used in Conclave.

Hotfix 18.8.2 (2016-04-13)

  • Decreased the rumble amount on controllers when continuously firing the Amprex.

Update 17.4 (2015-09-09)

  • Fixed some lingering visual FX from Amprex when used with Mirage’s Hall of Mirrors

Hotfix 16.5.3 (2015-05-13)

  • PBR material has been added to the Amprex!

Hotfix 16.4.1 (2015-04-23)

  • Fixed Amprex not chaining to nearby enemies.

Update 15.13 (2015-02-05)

  • Sinister Reach will now extend the Amprex’s chain lightning effect.

Hotfix 14.0.11 (2014-07-30)

  • Damage multipliers for the Amprex normalized.

Update 13.3 (2014-05-14)

  • Fixed an issue with the reload animation for the Amprex not properly coinciding with when the magazine was refilled.

Hotfix 13.1.2 (2014-04-25)

  • Improved the performance of the Amprex on low end machines.
  • Fixed the visuals on the battery component of the Amprex rifle.

Update 13.1 (2014-04-23)

  • Introduced.

See also[]