AK 5C Unlock BF 2042

Correct me if I'm wrong, the UB from the AEK is said to be a grenade launcher that shots little balls? Pellets? Idk the name but anyways, my theory is that it doesn't count because the attachment in itself isn't a shotgun, the Masterkey on the other hand is uniquely a shotgun and nothing else.

Thats cool yall figured out how to get things to add to the score... but explain this one....

All grenade launchers with the underbarrel shotgun at the bottom are not counted. However, the M4A1 has a proper 'underbarrel shotgun' – the kills are also counted, and the underbarrel has a lot more ammo.

What M4A1 are you talking about, that weapon is not in the game.

The M416 is a BF3 weapon available in the game. It has an underbarrel shotgun attachment that lets you complete that challenge. I just did it today. 

Been using this weapon and hasn't been counting for 2 days now 

So... with the recent removal of the masterkey can we get the unlock requirements for the AK 5C removed? Because I just know this likely won't even be fixed before BF6 releases. Feels great man.

M416 with the Attachement -> M26 Mass Buck <- is working.

I just unlocked the Ak 5c.

did they remove the under-barrel shotgun from the m5a3?