Re: Why will my Weapon, Vehicle, Attachment or Specialist not unlock?

Despite having the prerequisite kills for many vehicles and attachments the corresponding attachments do not unlock. This has been the most prevalent with the MCS-880, I am mastery 12 but the attachments stopped unlocking at mastery 11. 

the shotgun also does not have a description on how to do block some attachments. This is seen with the ammo types and under barrel attachments. 

the vehicles that have bugged progression are the EBAA wildcat and T-28 tank as well 

the weapons affected are the g57, MP-28  MCS -880, Ak-24

vehicles affected are the EBAA WILDCAT, T-28