Military · 9
Nine Military camos, sequential. Official Multiplayer ladder is Underbrush 5 through Ruby Snake 80. Multiplayer criterion for this class: Headshots.
Weapons / Special

Waiting for a verified source.
The official patch notes haven't changed this weapon yet.
The Roc 20mm 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 Roc 20mm across 3 slots, each with its unlock level and what it does.
In the same class: GDL Havoc, Grimhawk, NX Ravager. Each has its own page with level-by-level builds.
CAMO JOURNEY
Military 9 · Special 3 · Mastery 4
For Roc 20mm. Exact per-weapon objectives are not verified.
Military · 9
Nine Military camos, sequential. Official Multiplayer ladder is Underbrush 5 through Ruby Snake 80. Multiplayer criterion for this class: Headshots.
Special · 3
Three Special camos unlock after Military completion. Criteria are weapon-specific and are not copied as a generic list.
Not verified for this weapon
Mastery · 4
Four Multiplayer Mastery camos after Military + Special. Weapon Prestige camos are a separate path.
Not verified for this weapon
Prestige
Weapon Prestige camos are a separate reward path. They are not part of the 9 / 3 / 4 Mastery track.
Season 06 Weapon Prestige Camos — Roc 20mm
Camo
Requirement: Official S06 prestige lineup for Roc 20mm: Prestige 1 Bespatter, Prestige 2 Composite, Prestige Max Spooled.
Reward: Bespatter / Composite / Spooled