Originally Posted by
LeSwordfish
Helmets are pretty much exactly the same scale.(Primaris marines are bigger but more sensibly proportioned, so have the same heads and hands.) I use Tactical Marine helmets for all my primaris marines (just prefer the vox-grille look) and they look perfectly good. Only thing is to watch the raised gorget that primaris have - can restrict the angles you can put beaky helmets or similar wide helmets at.