Can't change attachments in match
This is a bug that I found sometimes in the Beta, where in a match occasionally I am unable to switch attachmets. If I try it instantly switches back to the one I had equipped before. I could spam it...
Ideas
If your in a game session, and you unlock attachments or upgrades for your vehicle it won’t allow you to equip them until you hack out into the lobby. Additionally, if you rank up and unlock a weapon the same is true. You only can equip the weapon if you back out to the lobby sometimes.