Posted: May 12, 2026
Views: 308CoD Black Ops 7 Season 3 Reloaded went live on April 30th, bringing with it a wealth of new content, enough to keep you engaged until the next season arrives, including a crossover event featuring RoboCop.
The event itself doesn't introduce a unique new game mode, it features both free and premium reward tracks. You can unlock new items within these tracks by earning XP through playing standard BO7 modes.
Within the free track, the most coveted, and undoubtedly the most difficult to obtain, reward is the ultimate prize: the special energy weapon known as Siren. In this guide, we'll focus on introducing this gear to help you decide whether it's worth the effort to unlock it.
How to unlock Siren?
RoboCop event runs until May 28th. During this period, you must earn at least 460,000 XP by participating in any Black Ops 7 game mode to unlock Siren.
While there is a possibility the weapon might be added to the armory later on, it's not guaranteed.
Furthermore, unlocking it via the armory would still require completing a significant number of challenges, so you're better off securing it directly before RoboCop event concludes!
To earn the necessary XP as quickly as possible, you'll need to be sufficiently familiar with at least one game mode to efficiently eliminate enemies. However, the faster option is to buy CoD Black Ops 7 Bot Lobbies from IGGM!
Combat difficulty is significantly lower in bot lobbies, and we guarantee a safe and stable gaming environment. This allows you to clear out enemies with far less effort than usual, letting you quickly redeem Siren once your XP totals are tallied!
Siren overview
In short, Siren is a charge-based weapon that fires slow-moving but extremely high-damage projectiles capable of piercing through enemies.
It is particularly well-suited for taking down hordes of enemies in Zombies mode. Additionally, you can charge up the weapon to increase the projectile's flight speed.
Projectile effects
Once a Siren projectile strikes an enemy, especially a single target, it results in an instant kill, thanks to its massive single-shot damage output of 100 points.
Furthermore, the specific hit location is completely irrelevant; as long as the projectile makes contact with an enemy in any way, it results in an immediate one-shot kill.
Most importantly, the projectiles are capable of piercing through enemies. This means it is entirely possible to achieve multi-kills with a single shot, as the projectile suffers absolutely no damage drop-off when passing through any target.
However, while Siren's projectiles do not suffer damage degradation when penetrating enemies, they will instantly shatter and vanish the moment they strike any non-enemy surface, such as various forms of cover.
More importantly, due to the sheer size of the projectiles themselves, their hitboxes are correspondingly massive; consequently, they are highly prone to colliding with cover.
That said, the weapon also boasts a high margin for error: even if a shot appears to have missed an enemy, it may still register as a hit.
Fire rate analysis
The weapon's actual fire rate is a mere 32 rounds per minute. In the context of CoD: Black Ops 7, this is considered quite sluggish, effectively precluding the possibility of rapid-fire bursts.
Precisely for this reason, if you miss a shot while engaging an enemy with Siren, you will find it extremely difficult to land a follow-up shot, unless you can leverage the interval between shots to reposition yourself strategically and regain the tactical advantage.
As for projectile velocity, if you merely tap the trigger to fire as quickly as possible, you will notice that the weapon features no pre-fire delay.
However, adopting this firing method causes the projectile velocity to plummet to its absolute minimum, a mere 12.7 meters per second.
Unless you are engaging at extremely close range, or simply relying on sheer luck, it is virtually impossible to land a hit on a target with a projectile traveling at such a glacial pace.
Consequently, we highly recommend utilizing the weapon's charge-shot mechanic. When fully charged, the projectile velocity reaches 38 meters per second.
While this still isn't exactly fast, it is undeniably a vast improvement over firing without a charge, thereby significantly boosting your chances of hitting the target.
Frustratingly, the game provides no explicit visual indicator to display your charge progress; you must rely solely on subtle changes in audio cues to gauge when the charge is complete. Typically, a full charge takes approximately 3 seconds to build up.
By default, Siren's projectiles possess a lifetime of 6 seconds, after which they will automatically self-destruct, even if they have yet to strike any object.
This mechanism imposes a strict limit on the maximum distance a Siren projectile can travel before self-destructing, a limitation that becomes particularly pronounced when you forgo the charge-shot mechanic. When fired without a charge, the weapon's effective maximum range is capped at a mere 76 meters.
Exclusive attachment
MFS Deflection Core is the exclusive magazine attachment for Siren, it can be available after unlocking Siren Prestige Level 1. Its effects include providing additional ammunition, increasing projectile velocity, and enabling bullets to ricochet.
While the first two enhancements take effect, they simultaneously cause a further reduction in the weapon's fire rate. Fortunately, the overall projectile muzzle velocity is boosted, particularly when fully charged.
However, a tricky drawback is that equipping this attachment reduces the projectile's flight duration, thereby further limiting its effective range; the bullets can travel a maximum distance of only 48 meters.
As for the ricochet mechanic, it means that Siren's projectiles will bounce off a target's body after making contact. Although this eliminates the weapon's ability to pierce through targets, the ricochet mechanism still allows you to land consecutive hits on multiple players.
Furthermore, the projectiles suffer no damage drop-off during the ricochet process. In other words, no matter how many times a bullet bounces before striking an enemy, it retains the ability to achieve a one-shot kill.
Therefore, if you are engaging in combat within a small, enclosed environment and utilize the weapon's charge-up mechanic, you can undoubtedly achieve excellent results in actual gameplay.
Pairing with Gung-Ho Perk
Beyond its exclusive attachment, if you wish to further boost Siren's combat effectiveness, it is highly recommended that you equip Gung-Ho perk. This perk allows you to fully charge your weapon while maintaining a sprinting state.
Consequently, if you need to open fire with Siren immediately during a firefight, you simply need to release the trigger to instantly launch a projectile at extremely high velocity, thereby significantly increasing your chances of hitting the target.
Compared to playing with Siren without this perk, this strategy enables you to adopt a much more proactive and aggressive stance on the battlefield, ensuring you aren't hindered by the weapon's otherwise sluggish response time.
Is Siren worth it?
If you are unable to unlock the specific attachment mentioned above, you may find that acquiring and using Siren feels somewhat unrewarding. However, when utilized in the right scenarios and with the proper technique, Siren delivers solid performance in actual combat.
The above covers everything you need to know about obtaining and using Siren in BO7. With just over two weeks remaining in RoboCop event, if this weapon appeals to you, now is the time to put in the effort to unlock it!
