I've just unlocked the Gauss, and I went in and got 20 kills with it, which should have gotten me the first attachment unlock. Problem is, after I left the game, it RELOCKED the gun as usual, but yet said I got the 20 kills, but I DIDN'T get the attachment unlock and says I need 50 kills now for lvl 2 but that doesn't give me the attachment unlock. SO what do I do now.

EDIT: Nvm, relogged and it fixed itself.