If you missed the Sirin 9mm’s original Season 01 event, check the in-game Armory: Activision said missed event weapons were likely to become earnable there after their events ended. If the Sirin appears, select it as your tracked unlock and earn the XP requirement shown in-game. The official material cited here does not confirm whether it is currently listed or specify its live challenge or XP total, so use the Armory display as the authority.
Unlock the Sirin 9mm through the Armory
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Open the Armory in-game. Activision’s Season 01 patch notes said the Armory unlocks at Player Level 24; that historical requirement may have changed in later updates.
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Look for Sirin 9mm among eligible missed content. Activision’s Season 01 overview says, “For example, if you miss the chance to obtain one of the Season 01 weapons unlocked via an Event, it is likely to be available to earn after the Event concludes.” This is qualified guidance, not confirmation that the Sirin is listed today.
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If it is listed, select it as the tracked unlock and earn the XP amount displayed in-game. Activision documents this general Armory workflow, but the sources cited here do not establish the Sirin’s current challenge details or exact menu labels.
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After unlocking it, check the weapon menu under Secondary Weapons, in the Special category.
Why the original event is not the current unlock route
The Sirin 9mm was introduced as an in-season event reward during Season 01. The contemporary Hit List community event had a reported goal of 25 billion skulls. Dexerto’s November 21, 2024 guide reported that participants earned one skull per Multiplayer elimination, one per five Zombies eliminations, and five per Warzone elimination. Those figures describe the historical event, not a way to unlock the weapon now.
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What the Sirin 9mm is
Call of Duty describes the Sirin as a fully automatic specialty weapon with SMG characteristics, used as a secondary weapon and with a slow rate of fire. The Season 01 overview lists a 32-round base magazine, three magazine options, 30 weapon levels, and Optic, Muzzle, Barrel, Underbarrel, and Magazine attachments. It identifies the weapon for Black Ops 6 Multiplayer, Zombies, and Warzone.
Call of Duty also says custom weapon builds can be accessed across Black Ops 6 Multiplayer, Zombies, and Warzone. The cited material does not spell out current account synchronization behavior or whether the Armory displays the same way in each mode.
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A blueprint is not proof that the base weapon is unlocked
Call of Duty’s Season 05 Battle Pass announcement listed a “Structure Elegance” Sirin 9mm Special blueprint on Page 7. That establishes that the blueprint was offered in that Battle Pass; it does not establish that owning it unlocks the base Sirin 9mm, or that the Battle Pass is still available.
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