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.
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