I wanted to just go straight to the professionals who can give me a straight answer. Does this helmet break these rules?
3.3. Armor must not catch appendages. Fingers should not catch in Armor. This includes articulated plates and large diameter chain.
3.4. Armor may not have protrusions that rise more than 1/2 inch from the surface.
Also, if I were to get shot directly in the face, would this helmet "prevent" my death?: