The JAK Signal Burst is an Aftermarket Parts Conversion Kit for the Holger 556 in Call of Duty Modern Warfare 3 (MW3). Check out our guide to learn how to unlock the JAK Signal Burst, its detailed stats breakdown, and its converted weapon.

How to Unlock JAK Signal Burst

Complete Five Week 5 Challenges

Players can get the JAK Signal Burst Kit early by completing five Week 5 Challenges in MW3 Multiplayer, Zombies, or Warzone. We recommend completing the following challenges from Week 5 since they are easier compared to the others:

• (Multiplayer) Get 30 Operator Kills while Aiming Down Sights with a Recommended Weapon.
• (Multiplayer) Get 30 Operator Kills with the Holger 556.
• (Multiplayer) Get 30 Operator Kills with Sights Equipped to a Recommended Assault Rifle.
• (Zombies) Get 750 Kills while Aiming Down Sights with a Recommended Weapon.
• (Zombies) Get 250 Kills with the Holger 556.
• (Zombies) Get 250 Kills with a Pack-A-Punched Holger 556.
• (Zombies) Get 250 Kills with a Recommended Assault Rifle.
• (Warzone) In Warzone, open 50 Loot Caches.

List of All Weekly Challenges and Rewards

Multiplayer Week 5 Challenges

• Get 30 Operator Kills while Aiming Down Sights with a Recommended Weapon.
• Get 30 Operator Kills with a Recommended Battle Rifle.
• Get 30 Operator Kills with the Holger 556.
• Get 30 Operator Kills with Sights Equipped to a Recommended Assault Rifle.
• Get 30 Operator Headshot Kills with the Holger 556.
• Get 10 Operator Longshot Kills with the Holger 556.
• Get 5 Operator Fury Kills with a Recommended Battle Rifle.

Zombies Week 5 Challenges

• Get 750 Kills while Aiming Down Sights with a Recommended Weapon.
• Get 300 Kills with a Recommended Battle Rifle.
• Get 250 Kills with the Holger 556.
• Get 250 Kills with a Recommended Assault Rifle.
• Get 250 Critical Kills with the Holger 556.
• Get 250 Kills with a Pack-A-Punched Holger 556.
• Get 3 Mimic Kills with a Recommended Battle Rifle.

Warzone Week 5 Challenges

• In Warzone Urzikstan, get 10 Operator Kills in the North-West Region (Resort, Power, Seaport, Cargo).
• In Warzone Urzikstan, get 10 Operator Kills in the Eastern Region (Military Base or Farms).
• In Warzone Urzikstan, get 10 Operator Kills in the Southern Region (City, Suburbs, Manor).
• In Warzone Urzikstan, get 10 Operator Kills in the Central Region (Old Town, Low Town).
• In Warzone, complete 15 Contracts.
• In Warzone, open 50 Loot Caches.

JAK Signal Burst Converted Gun

Conversion Kit for the Holger 556

The JAK Signal Burst is a full conversion kit for the Holger 556, turning it from a full auto AR to a 4-round burst rifle. However, unlike similar burst fire ARs like the DG-56 and the FR 5.56, the JAK Signal Burst has a lot of vertical recoil when shooting.

Holger 556 Best Loadout and Build

JAK Signal Burst Has a Built-In Optic

Unlike earlier conversion kits, the JAK Signal Burst is the first to feature a built-in optic sight when equipped. When ADS'ing, you will be using a custom ACOG scope that offers decent magnification at range.

JAK Signal Burst Stats

Pros and Cons

Pros	Cons
Bullet Velocity Gun Kick Control Recoil Control Hipfire and Tac Stance Spread	Sprint to Fire Speed Aim Down Sight Speed Fire Rate

Chevron count determines the effectivesness of the stat change while polygonal arrows indicate a new function being added.

Detailed Stat Adjustments

Positive stat changes are marked in Bold while negative stat changes are marked in Red.

Modern Warfare 3 (MW3) Related Guides

List of All Attachments

Attachment Types in MW3

All Conversion Kits in MW3