Chauchat Telescopic not unlocking, even though goals met..? So, unlocking the Chauchat Telescopic, not happening...

First got the resupply goal fulfilled, and I can see it still is 75/75. 

The on an operation, managed to net the 15 kills in a round needed with the Benet-Mercie Telescopic. Nothing happened, saw the counter 15/15 appear during the game, but the weapon never became available and the goal indicator in the customisation menus is still at 0/15. 

Did it again in Frontlines. Didn't work. 

Managed to unlock the Medic weapon that had a similar goal of kills per round without any problems...

All games playd on the new DLC maps. Playing on XBOX. 

Any and all help appreciated. 

Restarting the game didn't work either :(