I just had an encounter where I was set up in a room with an LMG with bipod on a shelf, half concealed knowing an enemy was about to come in. As soon as he showed himself rounding a corner about 5 meters away I opened fire aiming about chest/neck height. I even pre-fired a little, actually, hearing his footsteps.
I had him dead-to-rights - he stood no chance.
He killed me in a fraction of a second with his Helriegel.
Maybe I was unlucky and he got a couple of headshots in, but this is happening way too much now.
Assault DID NOT need a buff in CQC.