Editor recommended because this is the officially named Prestige Attachment for X9 MAVERICK. It is not labeled BEST. Tradeoffs are quoted from official launch copy.

X9 MAVERICK
Barrel14.6” MFS Pulse Load+ BarrelReach maximum Weapon Level and Prestige the weapon.
A short and lightweight barrel to drastically improve all facets of handling. Far more stable when in air and landing with a significant bonus to mobility, all at a moderate cost to damage range.
Attachments 1
- Barrel14.6” MFS Pulse Load+ BarrelReach maximum Weapon Level and Prestige the weapon.
A short and lightweight barrel to drastically improve all facets of handling. Far more stable when in air and landing with a significant bonus to mobility, all at a moderate cost to 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
For streamers: add this as an OBS Browser Source — stream widget
Recommended · bo7-x9-maverick-prestige-launch