Metal face mask and riot helmet hit boxes

Do shooting the holes in the eyes in the metal face mask count as a a normal headshot without armour, and does the riot helmet visor block any less damage then the rest of the helmet. and under the visor in the jaw area, is that considered a unarmoured headshot

Yes, the armor only protects if you actually hit the armor.

Are you aware that the riot helmet gives more protection against mellee and not bullet protection?

but for some reason the bucket and the riot helmet do have the same Stats