Editor recommended because this is the officially named Prestige Attachment for WARDEN 308. It is not labeled BEST. Tradeoffs are quoted from official launch copy.

WARDEN 308
Fire ModsMFS Snap TriggerReach maximum Weapon Level and Prestige the weapon.
Removes firing delay and improves fire rate at the expense of recoil control and damage range.
Attachments 1
- Fire ModsMFS Snap TriggerReach maximum Weapon Level and Prestige the weapon.
Removes firing delay and improves fire rate at the expense of recoil control and damage range.
Alternatives
- Base weapon / no prestige attachmentKeep the base gunsmith path if you do not want the official prestige tradeoff quoted above.
Evidence basis: Source
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Recommended · bo7-warden-308-prestige-launch