See Disney's crazy-accurate Star Wars prop replicas (pictures) - CNET

Disney and propmaker Propshop collaborated on a series of "Force Awakens" replicas made to perfectly match the original on-screen weapons and helmets.

Most Stormtrooper helmets look alike. Fi, however, gets a bloody hand print streaked across the face of his helmet. This sets him apart and hints at his rebellious storyline to come. Disney's replica of his FN-2187 Stormtrooper Helmet "is precisely detailed in every way and appears virtually identical to the prop wo by the actor."