- Projectile Speed multiplier from fully charging a shot reduced from 3x to 2x.
- Movement speeds greatly reduced.
Attachments tuned:MFS Deflection Core
Source: official patch notes ↗Weapons / Special

Waiting for a verified source.
Attachments tuned:MFS Deflection Core
Source: official patch notes ↗The Siren maxes out at weapon level 30. After that you can enter weapon prestige and unlock its prestige attachment.
We list 3 compatible attachments for the Siren across 2 slots, each with its unlock level and what it does.
The prestige attachment is the MFS Deflection Core. It unlocks after you reach max level and enter weapon prestige.
The last official change to the Siren was in Season 06 (2026-11-05). The patch notes have changed it 1 times since launch — all listed in the History tab.
In the same class: GDL Havoc, Grimhawk, NX Ravager. Each has its own page with level-by-level builds.
No verified builds are stored for this weapon yet.
SPECIAL CODE only lists editor or community builds after they are saved. You can still pick attachments by your weapon level.