Can't unequip weapon in inventory?

[아줌마]

I wanna switch my assault rifle but I can't somehow, is this a bug?

[Ryen]

Fix: Your middle mouse button is most likely mapped to a dpi shift or another button. So just turn it back to default. Then your unequip option will work. I have a G pro and went on g hub to change my middle mouse back to default. Don't know why it's an issue for this game but yeaah.
: )