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Launch super-heated slugs at individual foes, or hurl the entire weapon and ignite groups of enemies in a flash inferno.

The Javlok is a IconGrineerOn.png Grineer speargun that fires superheated projectiles dealing DmgFireSmall64.png Heat damage. Its Alternate Fire allows the weapon itself to be thrown at enemies, dealing an area-of-effect damage which is boosted by the remaining ammunition in the magazine.


  • This weapon deals primarily DmgFireSmall64.png Heat damage.
  • Primary Fire shoots superheated slugs that explodes on impact, damaging all enemies in a 2.4 meter radius.
    • Automatic charge-up.
    • Primary fire explosion has linear damage falloff from 100% to 70% from central impact.
  • Alternate Fire throws the Javlok, which staggers enemies and creates a 6 meter explosion.
    • Explosion deals 20% additional damage per round in the magazine.
      • Increasing magazine size thus increases potential damage.
    • Alternate fire explosion has linear damage falloff from 100% to 40% from central impact.
    • Fully charged explosion has a guaranteed DmgImpactSmall64.png Impact proc.
  • Initial hit and explosion apply status separately.
  • Explosions does not need direct line of sight to deal damage and will penetrate walls.
  • All explosions inflicts self-stagger.
  • Reloads 33% of the magazine per second while deployed or holstered.
  • Can benefit from Mod TT 20px.png Firestorm (Mod TT 20px.png Primed), Mod TT 20px.png Amalgam Furax Body Count, and Mod TT 20px.png Cautious Shot.
  • Can use the Javlok-exclusive Mod TT 20px.png Amalgam Javlok Magazine Warp mod.
  • Innate two Madurai Pol.svg polarities.


  • Projectile Impact
    • Above average damage
    • Above average reload speed
  • Projectile Explosion
    • Above average effective fire rate
    • Above average reload speed
    • Above average disposition
  • Uncharged Spear Throw Impact
    • Third highest reload speed behind Phantasma.png Phantasma
    • Above average disposition
  • Uncharged Spear Throw Explosion
  • Charged Spear Throw Impact
  • Charged Spear Throw Explosion
    • Highest max ammo
    • Highest crit chance
    • Second highest status chance behind ScourgePrime.png Scourge Prime
    • Highest reload speed
    • Second highest magazine behind ScourgePrime.png Scourge Prime
    • Highest disposition
    • Highest damage


  • Primary fire fires as soon as it has reached a full charge which can lead to premature firing.
  • Projectiles have travel time.
  • Javlok flies in an arc when thrown, making precise aiming difficult.
  • When not thrown at full charge, the Javlok has a 1 second delay after landing before exploding.
  • Once the Javlok is thrown, the player will not be able to use it until it is either picked up or when it returns to the player's hands after 6 seconds.
  • Projectile Impact
    • Low magazine
    • Low effective fire rate
    • Below average max ammo
  • Projectile Explosion
    • Below average crit chance
    • Low magazine
    • Below average damage
  • Uncharged Spear Throw Impact
    • Low magazine
    • Very low effective fire rate
    • Below average damage
    • Low status chance
  • Uncharged Spear Throw Explosion
    • Low magazine
    • Very low effective fire rate
    • Low status chance
  • Charged Spear Throw Impact
    • Below average magazine
    • Below average effective fire rate
    • Below average damage
    • Below average reload speed
    • Below average status chance
    • Below average crit multiplier
  • Charged Spear Throw Explosion


The Javlok's blueprint can be researched from the Chem Lab in the dojo.

Manufacturing Requirements
Detonite Injector.png
Time: 24 hrs
Rush: PlatinumLarge.png 35
MarketIcon.png Market Price: PlatinumLarge.png 240 Blueprint2.svg Blueprints Price:CreditsLarge.png15,000
Chem Lab ResearchClanAffinity64.png3,000
Time: 72 hrs
Prereq: Ignis
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.


  • Primary fire projectiles are affected by punch through, although it only affects map geometry, similar to the Grattler.png Grattler.
  • The ability to equip the Mod TT 20px.png Adhesive Blast mod was removed in Update 21.3.1, likely due to it having no effect or benefits if it did.

Alternate Fire[]

  • The Javlok's secondary fire throws the weapon itself at the target, inflicting 150 physical damage to the impaled target and 300 area-of-effect DmgFireSmall64.png Heat damage to all enemies within the impact radius.
    • For each round remaining in the magazine when thrown, an additional 20% damage will be added to the 300 AoE damage. For example, with just one round left the throw will deal 150 physical damage and 300 × (1 + 1 × 20%) = 360 DmgFireSmall64.png Heat damage. A full magazine of 6 will deal 150 physical damage and 300 × (1 + 6 × 20%) = 660 DmgFireSmall64.png Heat damage.
      • The damage bonus is independent of other modifiers like Serration, crits, and anti-faction mods.
Area of Effect Damage = 300 × (1 + [0.2 × Ammo in Magazine]) × (1 + Damage Mods) × (1 + Elemental Mods) × (0.2 × [1 + Critical Chance Mods]) × (2 × [1 + Critical Damage Mods])
  • The thrown Javlok has Punch Through and can pierce through enemies. It will not explode until it hits a solid surface.
  • If thrown without a full charge, the detonation area is indicated by a glowing aura around the weapon before detonating after a short fuse.
  • When fully charged, the Javlok no longer has innate Punch Through, and will detonate instantly on contact. Even with allies.
  • Charging the throw increases the projectile velocity, and fully charging it removes the explosion delay. It does not affect damage dealt either by the explosion or the projectile itself.
  • The Javlok will remain at the location where it was thrown for 6 seconds after landing, automatically teleporting to the player after said duration or until the player manually picks the Javlok back up again.
  • 33% of clip reloaded every second when The Javlok is deployed or holstered.
  • Throwing the Javlok will consume all of the remaining ammo in the magazine, but only if the Javlok explodes. Throwing the weapon at close range and picking it up before it explodes will neither consume ammo nor create an explosion.
    • The Javlok cannot be thrown if it doesn't have at least 1 ammo.
  • The Javlok's secondary fire has a max throwing range of 48 meters.
    • The arc Javlok will take when thrown is affected by both the angle of the throw as well as how much the throw was charged.
    • Throwing distance can be increased with flight speed modifiers, such as Mod TT 20px.png Terminal Velocity and ZephyrIcon272.png Zephyr's Mod TT 20px.png Jet Stream augment.
  • In addition to the secondary fire's AoE inflicting DmgFireSmall64.png Heat damage, it also has a guaranteed Impact proc, but only if thrown with a full charge.
  • While the Javlok's secondary fire can be charged while wall-latching or mounting a zipline, the weapon itself will not be thrown until the player dismounts from the wall or zipline, upon which the Javlok will immediately launch.
    • This also applies to sliding and can result in unintentional self-stagger if the user is aiming too low.
  • Alt-fire is not affected by Multishot.
  • If the Javlok directly hits an enemy and the enemy survives the explosion, the Javlok will remain impaled on the enemy.


  • Both the primary and secondary fire of the Javlok can be controlled by IvaraIcon272.png Ivara's Navigator130xDark.png Navigator.
  • It's highly recommended to use Mod TT 20px.png Wildfire when modding the Javlok, as both the DmgFireSmall64.png Heat damage and magazine capacity boost will improve the weapon's thrown damage.
    • Similarly, mods such as Mod TT 20px.png Amalgam Javlok Magazine Warp and Mod TT 20px.png Tainted Mag will also further increase the thrown damage. The decreased reload speed of the latter is also circumvented by the weapon's innate magazine replenishment when thrown or holstered.
  • The Javlok's primary fire mode has an Alarming noise level, but the alt-fire throw itself is considered silent and therefore will not break Ivara's Prowl130xDark.png Prowl.
  • The Javlok works well in conjunction with VaubanIcon272.png Vauban's Bastille130xDark.png Bastille's Vortex part as the AoE damage dealt by the alt-fire will hit all enemies trapped in the Vortex.
  • Secondary fire will pierce and hit the head of an enemy manning a Rampart even without punch through.
  • Secondary fire is unaffected by mods that require you to aim to gain benefits (e.g., Mod TT 20px.png Argon Scope, Mod TT 20px.png Bladed Rounds) on account of the weapon being in flight. It's advised to mod accordingly if you plan on using the alt-fire extensively.
  • Javlok Capacitors, which drop from Grineer Prosecutors, can be farmed on Ceres.
  • When the javlok is thrown, it is considered as holstered thus can make use of the Synth mod set's bonus, resulting in the javlok being throwable again when you pick it up.
  • In close-quarters where the extra velocity isn't needed, throwing the Javlok without charging it can make it easier to avoid staggering yourself due to the explosion delay and range indicator.
    • The high Punch Through of the non-charged version also makes it harder to accidentally stagger yourself by hitting enemies or allies that get too close.


  • The name is a play on "Javelin" and the "Lok" naming scheme which is common to Grineer weapons.
  • The Spearguns (Javlok, Ferrox, Scourge) have their own unique set of idle animations on every Warframe, both on Agile and Noble.
  • The Javlok was originally named "Flame-spear" by the council chat.
  • The Javlok is so far the only weapon that has a resource exclusive to it, in this case being the Javlok Capacitor.
  • When holstered, the Javlok's hilt will retract and the muzzle of the weapon will be covered.
  • While the separate reload time for the alt-fire does nothing, a bug used to allow this shorter reload time to be applied to the primary fire. It could be done by manually pressing the reload key while the spear-throw attack was charging.


  • Sometimes the Javlok will not be equippable for a period of time after being picked up, forcing the user to switch weapons.
  • Applying punch through on the Javlok and using its alt-fire will cause it to do a self-harming explosion that has no visual indicator, but won't physically "explode" and damage enemies until it's reached a sufficient stopping point in flight.
  • Having -accuracy will seemingly shift the AoE radius in such a weird way that it will cause self-harm when thrown too close.
  • The AoE from throwing the Javlok doesn't deal damage to arming Sapping Osprey orbs. Only a direct hit from the thrown Javlok can damage arming orbs.
  • Throwing the Javlok on a Nullifier Crewman's bubble will lodge the weapon into it. Disabling the bubble will make the Javlok disappear along with the bubble and killing the Nullifier Crewman will force the player to wait until the Javlok automatically returns.
    • However, it's possible to pick up the Javlok while it is lodged in the bubble.
  • While HallOfMirrors130xDark.png Hall Of Mirrors is active, picking the Javlok up after having thrown it earlier will result in the Javlok disappearing but not actually returning to Mirage's possession. The weapon will still automatically return after 6 seconds.
  • In some cases, it's possible for the Javlok to be lodged underground, even without punch through mods equipped.
    • The weapon will still return to the player after 6 seconds.
  • When an enemy with a lodged Javlok dies, there is a chance for the weapon to disappear with them.
  • Although the alt-fire Throw is not given additional projectiles from multishot, it will still show an increase in damage and status chance in the Arsenal when multishot mods are equipped. But this bonus damage and status chance are not there in actual use.


Javlok Skins Edit

Patch History[]

Hotfix 31.5.4 (2022-05-02)

  • Fixed crash related to the FX on the Javlok.

Hotfix 31.5.1 (2022-04-27)

  • Fixed script error related to FX on the Javlok.

Update 31.1 (2022-02-09)

  • Fixed Javlok projectiles flying side-on to the direction of travel when the Renuntio Speargun Skin is equipped. Also fixes the same scenario for the Scourge/Scourge Prime with the Carcinus Speargun Skin equipped.

Hotfix 28.0.6 (2020-06-24)

  • More fixes towards various missing audio/visual effects for the Javlok's throw attack explosions.

Update 28.0 (2020-06-11)

  • Fixed various audio/visual effects missing for the Javlok's throw attack explosions.

Hotfix 27.2.2 (2020-03-06)
Reduced the following AoE weapons Radial Damage Falloff from central impact that were all previously 90%:

  • Javlok: 30% / Alt Fire 60%

Update 27.2 (2020-03-05)

Self Damage Changes

We are getting rid of Self Damage and replacing it with something else: instead of Self Damage, it’s now ‘Stagger’. This change completely removes the chance of killing yourself, and instead now creates scenarios where you will interrupt yourself - or ‘Stagger’ - to varying degrees if you aren’t careful.

The degrees of Self-Interrupt start with a small stumble all the way to full knockdown depending on how close you are to the center of explosion. Any Mods referring to Self Damage will be converted to acknowledge Stagger.

With this Self-Interrupt system, we have added dozens of new recovery animations that harness a ninja-like recovery experience. By pressing ‘Jump’ at the correct time, you can execute a ninja-skill-based knockdown recovery to ALL in-game knockdowns. This ninja recovery window is indicated by a glowing FX on your Warframe.

In the original Dev Workshop, we said:
As a result of this overall systemic change, Weapons with Stagger will be getting approximately a 20% buff in Damage, with any weapons with AOE receiving a 50% Radial Damage Falloff from central impact.

This is no longer accurate after continued testing. What we are doing now is:

No damage buffs have been added, but any weapons with AOE are receiving ~20% increase in Radius. Additionally, AOE weapons are receiving a 90% Radial Damage Falloff from central impact. This means on the very outer section of the explosion Radius 10% of the Damage will be dealt. Tactics will be deadly - aim true, Tenno.

Why: Several players brought up the history of the Tonkor and we want to make sure we ship this change in a place that’s conservative in its starting point from a balance perspective. The complete removal of Self Damage does change the pace of destruction with some of the game’s most powerful weapons, so we want to make sure we can iterate upwardly instead of releasing a bonanza of explosions with no other choices.

Update 25.8 (2019-10-01)

October 2019 Riven Disposition Change
  • Javlok: 1.2->1.25

Hotfix 25.1.2 (2019-06-12)

  • Fixed the Javlok Amalgam Mod and Reflection Mod stacking in an unexpected multiplicative way.

Update 25.0 (2019-05-22)

  • 33% of clip reloaded every second when Spear is deployed. This allows for a more fluid use of all the Gun Spear mechanics.
  • Reduced zoom FOV.
  • Adjusted Impact and radial Damage split from 230 Impact and 50 area-of-effect to 160 Impact and 120 area-of-effect.
  • Increased area-of-effect radius from 1.6m to 2m.
  • Increased projectile speed from 70 to 130.
  • Removed self damage from Primary fire.
  • Removed damage fall off from Primary fire area-of-effect.
  • Auto recall timer reduced from 20 to 6 secs.

Hotfix 24.2.7 (2018-01-09)

  • Javlok Capacitors can now be sold to 2,500 Credits (as to not pile up in your Inventory).

Hotfix 22.16.5 (2018-03-21)

  • Fixed Javlok throwing sound playing when equipping Mods in Arsenal.

Update 22.12 (2018-02-09)

  • Fixed the Javlok alt fire not cancelling reload when you had no more ammo in the clip.
  • Mastery Rank increased from 6 to 7.
  • Damage from direct hits increased from 185 to 230 (primary fire).
  • Reload speed increased from 2.2 secs to 1.9 secs.
  • Removed camera shake when throwing spear.

Update 22.10 (2018-01-25)

  • Fixed Clients seeing the Javlok explosion after the enemy falls to the ground and the Javlok floating a couple feet from the point of actual impact.

Update 22.9 (2018-01-17)

  • Fixed the Javlok no longer sticking inside of enemies that did not die from the javelin.
  • Fixed the Javlok marker not displaying if Transferring to Operator before the Javlok lands.

Hotfix 22.8.3 (2018-01-11)

  • Fixed Ash’s Blade Storm not removing the temporary melee weapon given to Ash if the only weapon he has is a Speargun (Javlok, Scourge, etc) and he's currently thrown the Speargun out when activating Blade Storm.

Update 21.6 (2017-08-29)

  • Reloading can now be interrupted by throwing the Javlok, and can be thrown after depleting all primary fire without having to wait for it to fully reload.

Hotfix 21.4.2 (2017-08-11)

  • Fixed Javlok consuming ammo from throwing while having the Void Fissure Reactant Buff (infinite ammo).

Update 21.4 (2017-08-10)

  • Removed the explosion delay from Javlok's spear when thrown fully charged. Quick throw retains the delay to facilitate getting out of range before it detonates.

Hotfix 21.3.1 (2017-08-04)

  • Javlok alt fire changes:
    • AOE explosion happens 1 second after impact.
    • Consumes ammo and AOE damage is increased by 20% per round in mag when thrown.
    • Explosion FX updated to better reflect the AOE range.
    • Ammo pool reduced to 300.
  • Lessened the spread from the Heavy Caliber mod when used with the Scourge, Ferrox, and Javlok.
  • Adhesive Blast is no longer equipable on the Javlok and the Scourge.

Hotfix 21.0.9 (2017-07-17)

  • Fixed the Javlok playing a weird animation when quickly cycling through ‘Randomized’ color options.

Update 21.0 (2017-06-29)

  • Fixed playing a holstering animation after throwing the Javlok or Ferrox.

Hotfix 20.4.6 (2017-05-11)

  • Fixed a memory leak when throwing the Javlok/Ferrox in Limbo’s Stasis.

Hotfix 20.4.4 (2017-05-08)

  • Fixed experiencing a crash after throwing the Javlok in the air then Transferring to the Operator.

Update 20.3 (2017-04-26)

  • Reduced the damage of the Javlok in Conclave.

Hotfix 20.2.3 (2017-04-19)

  • Reduced the collision size of the Javlok primary fire projectile in Conclave.

Update 20.0 (2017-03-24)

  • Stats for alternate fire are now displayed in the arsenal.
  • Fixed a visual bug for Clients where the charged shots of the Opticor, Angstrum, Javlok, or Ferrox would appear to fire twice.

Hotfix 19.13.1 (2017-03-10)

  • Fixed Clients being able to throw multiple Javloks and Ferroxs which are then unable to be picked back up.
  • Fixed the Javlok not dealing AoE damage upon throwing it.
  • Fixed Adhesive Blast not causing the Javlok explosion to stick and pause for a while (through primary fire)

Update 19.13 (2017-03-09)

  • Fixed the Javlok disappearing when being thrown into water.
  • Fixed the Javlok not having a firing animation when on a zipline and also not being able to throw it.
  • Fixed missing pickup sounds for the Javlok.

Hotfix 19.12.1 (2017-03-03)

  • Fixed Ash’s Noble/Agile animations not functioning properly with the Javlok.
  • Fixed Equinox’s Noble/Agile animations not functioning properly with the Javlok.

Update 19.12 (2017-03-02)

  • Reduced the primary fire damage of the Javlok in Conclave.

Hotfix 19.11.5 (2017-02-28)

  • Javlok's projectile collision size has been increased, making it easier to land hits while also dealing 50 Heat AoE damage in a 1.6m radius.
  • Fixed the Javlok disappearing after being thrown if you left the room.

Update 19.6 (2017-01-11)

  • Fixed Client and Host seeing the Javlok in different positions once thrown.

Hotfix 19.5.4 (2017-01-03)

  • Adjusted Charged throw return to holster time to be the same as its quick throw in Conclave.

Hotfix (2016-12-20)

  • Fixed Javlok not keeping appearance customization when thrown.

Update 19.4 (2016-12-16)

  • Introduced.

Last updated: Update 25.4 (2019-07-18)