Abonner for at downloade
(OUTDATED, NEW LINK IN DESCRIPTION) ZRHC ALTYN Helmet (Russian Titanium Helmet) 1.26+

NEW ALTYN HELMET (link)

Fits best for bigger/biggest spawnable humans (still fits for smaller but just not so good)
100% VANILLA
The Altyn Helmet is a russian helmet which the production has been discontinued, yet it is very popular in russian forces.
Spetsnaz
(TO CLEAR THINGS UP)
I am not a supporter for the things russia is currently doing, this is just because it is a fun helmet and for it to be accurate.

Works best for the biggest (bigger) humans, minimum of 64 iterations and continuous (CONTINUOUS IS ALWAYS NEEDED)

FEATURES:
Movable and pretty well sitting helmet
Blocks bullets (not point blank of course)
Movable visor which also blocks bullets (you can flip it up and down)