I was trying to use the M4A1 and I've been leveling it up (see screenshot) but the mastery level icon is greyed out and I'm not able to use any of the attachments I should have unlocked being Mastery 9. Having the same issue unlocking Career levels weapons I should have access to (level 11).
I have the same issue being on 14 with the LMG.
None of the attachments are available...
I’m having the same issue.
just restart your game
just ran into this as well, on the EMR gun, want to rank that bad boy up to make a sick load out. restarting game now hope it corrects itself once i get through a 100k queue wait lol
Bro try just restarting the game if you're still having the issue in the second beta. Worked for me.
