Editor recommended because this is the officially named Prestige Attachment for M34 NOVALINE. It is not labeled BEST. Tradeoffs are quoted from official launch copy.

M34 NOVALINE
UnderbarrelMFS Enhance-32 HandstopReach maximum Weapon Level and Prestige the weapon.
Steady your aim for longer and with increased control and mobility with an enhanced grip that unleashes your true marksman.
Attachments 1
- UnderbarrelMFS Enhance-32 HandstopReach maximum Weapon Level and Prestige the weapon.
Steady your aim for longer and with increased control and mobility with an enhanced grip that unleashes your true marksman.
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-m34-novaline-prestige-launch