In a frankly terrifyingly long explanation of how weapon camo unlocks work in Call of Duty: Black Ops 6 and the updated Call of Duty Warzone-Zombies-Multiplayer universe, Activision confirmed that the Black Ops 6 camo grind will do away with weapon level requirements, letting players start progression on camo challenges from the get-go.
In a chunker of a blog post (which I find easiest to read on Battle.net), Activision explains the "epic grind to unlock Weapon Camos, including Mastery Camos for Multiplayer, Zombies, and for the first time, a dedicated Camo Challenge system for Call of Duty: Warzone." This post also has a ton of video embeds showing off the different camos, and the CoD sleuths at Modern Warzone stitched a few together in this handy clip:
