Prestige at level 70 is a community claim, not a current official rule
The available community page says level 70 offered a prestige choice that reset level and unlocked guns. It also reports weapon challenges, player challenges and camos, but current requirements and rewards are unverified. We could not verify the current threshold, reset behavior, reward, XP sources or unlock path from a creator source or current in-game capture. Check your own session before planning around it.