Sentry Ahab's helm

Sentry Ahab's helm is a unique robot mod for the sentry head in the Fallout 4 add-on Automatron.

Characteristics
Although Ahab's helm is classed as a mod, it essentially serves as a blueprint instead. This means that it can be crafted multiple times for different automatrons once it has been acquired. The most notable feature is the deathclaw skull joined with metal plates to form its shape.

Locations
Found on Ahab in the Fort Hagen hangar during the quest Headhunting.

Bugs
If you attempt to attach the helm acquired from Ahab to a robot at a robot workbench, the game treats it as if you had instead created the helm from scratch. This can be exploited to quickly gain XP and caps.