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The JAK Salvo is the first of four new aftermarket parts introduced in Modern Warfare 3 and Warzone Season 6.

This attachment is designed to enhance the KATT-AMR sniper rifle’s firepower.

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In this ONE Esports guide, we explain the effects of the JAK Salvo and how to unlock it in the game.

Pros and cons of JAK Salvo

This aftermarket part is a conversion kit attachment that modifies the KATT-AMR into a powerful launcher capable of firing anti-materiel explosive rockets, delivering devastating damage.

JAK Salvo aftermarket part pros and cons in Modern Warfare 3 — Screenshot by Jeremiah Sevilla/ONE Esports

In addition to its destructive power, it significantly improves the weapon’s gun kick control, recoil management, and aim down sight speed, making it more manageable in intense combat scenarios. However, these benefits come at the expense of bullet velocity.

Furthermore, the conversion kit restricts the use of an ammunition attachment and limits the magazine capacity to just three rounds.

How to unlock JAK Salvo in Modern Warfare 3 and Warzone

The conversion kit is a reward for completing challenges during Week 1 of Modern Warfare 3 and Warzone Season 6.

To unlock it, players must complete five out of the 21 available tasks spread across Multiplayer, Zombies, and Warzone modes.

Here’s a list of the Season 6 Week 1 challenges:

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MW3 MUTLIPLAYER SEASON 6 WEEK 1 CHALLENGES	MW3 ZOMBIES SEASON 6 WEEK 1 CHALLENGES	WARZONE SEASON 6 WEEK 1 CHALLENGES
Get 40 Operator Kills.	Get 250 Kills.	In Warzone Urzikstan, get 15 Operator Kills in the North-West Region (Resort, Power, Seaport, Cargo).
Get 30 Operator Kills while crouching.	Get 150 Kills while crouching.	In Warzone Urzikstan, get 15 Operator Kills in the Eastern Region (Military Base or Farms).
Get 15 Operator Kills with explosions.	Get three Disciple Kills.	In Warzone Urzikstan, get 15 Operator Kills in the Southern Region (City, Suburbs, Manor).
Get 20 Operator One-shot One-Kills.	Get 250 One-shot Kills.	In Warzone Urzikstan, get 15 Operator Kills in the Central Region (Old Town, Low Town).
Get 20 Operator Kills with a weapon set to single fire mode.	Get 60 Kills with a weapon set to single fire mode.	In Warzone, place in the Top 10 seven times.
Get three Operator Double Kills.	Get 10 Special Zombie Kills with an SMG.	In Warzone, complete 15 Contracts.
Get three Operator Longshot or Collateral Kills.	Get 200 Kills in the Medium or High Threat Zone.	In Warzone, open 75 Loot Caches.

To efficiently complete your weekly challenges, we recommend focusing on Multiplayer. Engage in Hardcore Quick Play, Small Map Mosh Pit, or 10v10 Mosh Pit matches for the quickest results.

For those in Warzone, prioritize challenges related to looting caches and fulfilling contracts before concentrating on eliminations.