How to get JAK Thumper-556 Aftermarket Part in MW3 & Warzone

MW3 and Warzone‘s Week 4 of challenges bring the new JAK Thumper-556 Aftermarket Part, granting several Launchers an improved long barrel that shoots projectiles at higher velocities and distances.

To unlock it, you’ll be required to complete a series of challenges in-game, so here’s how you can get this explosive AMP to destroy both enemies and also Killstreaks in multiplayer.

How to unlock JAK Thumper-556 attachment

To unlock the JAK Thumper-556 attachment, you’ll need to complete any five of MW3 and Warzone’s Season 4 Week 4 challenges. Keep in mind that challenges can be combined across all the modes, meaning you won’t need to complete them in just one.

Here’s every Season 4 Week 4 challenge you can complete:

Multiplayer

• Get 10 Kills against Operators who are Blinded or Stunned
• Get 20 Operator Kills while using Explosive Ammo
• Get 10 Operator Kills with a Bomb Drone or Mosquito Drone
• Destroy eight Aerial Killstreaks
• Place top of the Leaderboard three times
• Get three Operator Kills after Death
• Get three Operator Double Kills with Grenades or Launchers

Zombies

• Get 300 Kills with Frost Damage with a Recommended Weapon
• Get 300 Fire Damage Kills with a Recommended Weapon
• Get 300 Explosive Damage Kills with a Recommended Weapon
• Destroy 15 Counter UAVs in Mercenary Camps
• Get two Warlord Kills with a Recommended Weapon
• Get 50 Kills with a Recommended Melee Weapon while Frenzied Guard is Active
• Get five Kils with a Monkey Bomb five times

Warzone

• In Warzone Urzikstan, open 20 Loot Caches in the North-West Region (Resort, Power, Seaport, Cargo)
• In Warzone Urzikstan, open 20 Loot Caches in the Southern Region (City, Suburbs, Manor)
• In Warzone, place in the Top 10, five times
• In Warzone, get seven Operator Kills or Kill Assists with a Recommended Weapon
• In Warzone Urzikstan, open 20 Loot Caches in the Eastern Region Military Base (Military Base, Farms)
• In Warzone Urzikstan, open 20 Loot Caches in the Central Region (Old Town, Low Town)
• In Warzone, complete 20 Contracts

To complete all these faster, make sure you have the best controller settings and audio setup, allowing you to secure challenges and in-game rewards easily.