Other great resources: Official JS API docs, Scripting Forum
DROID_WEAPON
Overview
A droid capable of attacking other droids.This can be either a vehicle (wheeled, half-tracked, tracked, hover) or VTOL, but not a cyborg. Cyborg attack droids are classified as DROID_CYBORG instead.
Prior to Warzone 3.2, super-cyborgs were classified as DROID_WEAPON. In Warzone 3.2 and above, they are classified as DROID_CYBORG.