Production information
Manufacturer Stormvanger Assemblies, Light Division

Jalastar Aerospace

Production Year 2751[1][2]
Model JVN-10N
Class Light
Technical specifications
Mech type Inner Sphere BattleMech
Mass 30 tons
Chassis Duralyte 246
Armor StarGuard I
Engine GM 180
Communications System Garret T10B
Targeting Tracking System Dynatec 128C
Heat Sinks 10
Speed 97.2 km/h
Jump Jets Rawlings 45
BV (1.0) 487
BV (2.0) 594[2]


The Javelin was first built in 2751 by Stormvanger Assemblies as a recon 'Mech meant to be exported to the member states of the Star League. A compromise between speed and firepower, the Javelin was fast enough to avoid engagements with heavier 'Mechs while still having sufficient firepower to dissuade pursuit. In particular the 'Mech's maneuverability meant that while its main function was to perform reconnaissance, the Javelin became adept at conducting ambushes, gaining a reputation for appearing out of nowhere and giving rise to the phrase "sneaky as a Javelin."[1][2][3][4]

The Javelin had yet to be integrated into most SLDF regiments when the Amaris Civil War struck and Stormvanger Assemblies' factory on Caph was destroyed in 2774, ending all production of the Javelin design. Despite this, the Federated Suns - who had purchased the largest total number of Javelins from Stormvanger Assemblies - succeeded in their plans to incorporate the Javelin into practically all of their 'Mech regiments at the start of the First Succession War, where its appearance took many enemy combatants off-guard. Though employed to varying degrees by the other Successor States, the Javelin quickly became synonymous with the Federated Suns, often anchoring scout lances, or, in certain units, teaming up with other Javelins to create mobile fire support lances. Following the creation of the Federated Commonwealth, the design was upgraded with newly-recovered lostech during the latter part of the 3040s, and at the behest of AFFC High Command, Jalastar Aerospace began production of new Javelins in 3055. Since then, the sturdy and reliable scout 'Mech has continued to serve with distinction on the battlefield; though the original's level of armor protection has been deemed as insufficient by some, new variants continue to be introduced as technology progresses, ensuring its continued service towards the end of the thirty-first century.[1][2][3][4]

Weapons and Equipment[edit]

The Javelin carries a limited weapons array consisting of two Arrowlite SRM-6 launchers, one each in the left and right torso along with one ton of ammunition per launcher, and no backup weapons. This makes the Javelin highly reliant on good supply lines and can hamper the 'Mech if it is forced into guerrilla combat, though with one ton of ammo per launcher it has sufficient endurance for most battles. As a close support 'Mech, it is highly adept at swooping in and helping deliver the final blow, especially as its scattering missiles can exploit and cripple exposed systems. However its light armor makes the Javelin ill-suited for hand-to-hand brawling. Notably, the Arrowlites and their ammunition stores are placed so far forward in the 'Mech's torso that the Javelin has a front-heavy center of gravity, causing MechWarriors unfamiliar with the design's forward-lean while running to be prone to falling over while moving at high speeds in difficult terrain.[1][2]

With a reliable GM 180 engine the Javelin benefits from a good cruising speed of 64 km/h while six Rawlings 95 jump jets - two in each leg and the remainder in the rear center torso - provided for good maneuverability and a total jumping distance of 180 meters. Four tons of armor allow it to survive most surprise encounters and retreat to safety, with a half-ton protecting the chest, side torsos and legs each. Ten heat sinks mounted in the engine are sufficient cooling for the 'Mech.[1][2]


  • JVN-10A 
    Introduced in 2752, the 10A is a long-range harasser. Both SRM-6 racks are replaced by one LRM-15 in the right torso with one ton of reloads. BV (2.0) = 653[5][6]
  • JVN-10F 
    The only Succession Wars variant, also known as the Fire Javelin, the 10F was introduced in 2819 and is the complete opposite of the 10N model as it removes both of the SRM-6 launchers in favor of four Diverse Optics Type 20 Medium Lasers. While less reliant on expendable ammunition stores, this variant is also more susceptible to overheating if the lasers are used simultaneously with the jump jets.[1][2] BV (1.0) = 702, BV (2.0) = 835[7]
  • JVN-10P 
    The 10P model is an upgrade of the 10N model introduced by the Federated Commonwealth amid much secrecy in 3049. The 10P retains the armor and speed profile of the 10N, removes one of the SRM-6 launchers and replaces it with two Hovertec Streak SRM-2 launchers. While sacrificing slightly in terms of firepower, this variant is far more ammo-efficient than the original.[3][4] BV (1.0) = 514, BV (2.0) = 590[8]
  • JVN-11A 
    The second version of the Javelin to carry the moniker of Fire Javelin, this upgrade of the 10F was introduced following the Clan Invasion in 3053 and mounts seven medium lasers, using double heat sinks to counter the massive amount of heat that can build up from using so many energy weapons. The conventional armor was also swapped out for Ferro-Fibrous and an additional ton added to increase the overall protection for the Javelin. This design was a field refit often seen after other units had cast off their old parts.[9] BV (1.0) = ??, BV (2.0) = 1,073[7][10]
  • JVN-11B 
    The 11B is a scout design introduced in 3054 that replaces the missiles launchers with twin SRM-4s so that it can mount a Beagle Active Probe and Guardian ECM Suite. Additional Ferro-Fibrous armor gives the 11B more than a forty percent increase in protection, while the inclusion of CASE necessitated dropping the jump jets and an upgrade to double heat sinks provides ample cooling. BV (1.0) = ??, BV (2.0) = 678[7]
  • JVN-11F 
    Also produced during the Jihad this variant was introduced in 3070 and removes the weapons and equipment of the 11D to carry a Snub-Nose PPC supplemented by two trios of Machine Guns, with each trio linked through a Machine Gun Array. This low-heat model is devastating to unarmored infantry, though it is less prevalent than the 11D within the AFFS.[4] BV (1.0) = ??, BV (2.0) = 827[7]

Custom Variants[edit]

Apocryphal Variants[edit]

Apocryphal Content Starts

The information after this notice comes from apocryphal sources; the canonicity of such information is uncertain.
Please view the reference page for information regarding their canonicity.

These variants were introduced in various apocryphal sources, and thus far have not appeared in any canonical media.

From MechWarrior Online:

  • JVN-HT Hi There! 
    While there are no indications that Fourth Deneb Light Cavalry MechWarrior "Wildman" Bill Wilkes piloted anything other than a standard and most likely JVN-10N variant, in MechWarrior Online the Hi There! Hero 'Mech features Lostech not commonly available during the Third Succession War. Mounting a 180 rated XL engine and built on an Endo Steel chassis, MWO's Hi There! retains the 10N's classic torso SRM-6s and uses the extra weight to mount a pair of Medium Lasers in each arm. Aside from swapping the ten heat sinks for double strength versions, MWO's Hi There! features the same level of SRM reloads, armor coverage and jump jet capacity as the 10N.[16]

Apocryphal Content Ends

Design Quirks[edit]

The Javelin has the following Design Quirk:[17]

Notable Pilots[edit]

See Category:Notable Javelin Pilots


  • In German products the unit's proper name translated to Speerschleuder, which rather means Javelin Thrower. The model code was accordingly changed to SPR-10R.
  • In French products the unit's proper name was perfectly translated as Javelot.



  1. 1.0 1.1 1.2 1.3 1.4 1.5 Technical Readout: 3025, p. 16-17
  2. 2.0 2.1 2.2 2.3 2.4 2.5 2.6 Technical Readout: 3039 p. 104-105
  3. 3.0 3.1 3.2 Technical Readout: 3050, p. 66
  4. 4.0 4.1 4.2 4.3 4.4 Technical Readout: 3050 Upgrade, p. 18
  5. Record Sheets: Succession Wars, p. 38
  6. MUL online entry for the JVN-10A variant
  7. 7.0 7.1 7.2 7.3 7.4 Master Unit List: Battle Values, p. 113
  8. Technical Readout: 3050 Upgrade, p. 19
  9. Record Sheets: 3050 Upgrade (Inner Sphere), p. 24 & Technical Readout: 3050 Upgrade, p. 18
  10. In Record Sheets: 3050 Upgrade, this variant was identified as the JVN-10N, the same designation as the base design. This error was corrected in the Master Unit List publication
  11. Record Sheets: Upgrades, p. 47
  12. Technical Readout: 3145, p. 210
  13. Record Sheets: 3145 New Tech, New Upgrades, p. 84
  14. BattleTech Dossiers: The Bounty Hunter, p. 10
  15. BattleTech Dossiers: The Bounty Hunter, p. 21
  16. MechWarrior Online "Javelin Sale Page"
  17. BattleTech Manual, p. 92, "BattleMech Quirk Table - Javelin"