Shotgun ribbons won't unlock in 'PHANTON TRAINEE' -assignment

[Afterski420]

Hi,

Yesterday I played Operation Locker with Assault using Saiga 12G with slugs.

I got 2x Shotgun ribbons, even the Battle Report have noticed it, but it won't unlock for the assingment.

What's wrong with it?

...

[TheChernoSniper]

Have you finished the other required tasks to unlock the assignment?

[MorningTimeCloud]

You need to finish the other tasks before trying the shotgun ribbons. It will keep resetting otherwise.