Mecronids

The Mecronids are a xenos race about which almost nothing is known, save for their mysterious, liquid-metal like armor. Debate amongst the Ordo Xenos as to whether this device is truly an alien in its own right, a parasite of sort, or simply a device employed by its alien creators.
==Unique Equipment==
Mecronid Armour
Discovered in the ruins of Mosul, this unique set of armor has sparked much debate amongst the Ordo Xenos as to whether this device is truly an alien in its own right, a parasite of sort, or simply a device employed by its alien creators. Resembling naught so much as a pool of liquid metal, the device responds to external stimulation, although is resistant to auspex scans. 
When the metal comes into contact with human skin, it begins to coalesce, slithering over the skin to form a protective sheath much like armor. The metal is cool to the touch and responds to attacks by becoming momentarily super-dense, deflecting impacts or energy blasts across its surface. Using Mecronid armor does have its downsides, however. So long as the wearer remains conscious, the armor remains protective. 
As soon as the wearer loses consciousness, however, the parasitical armor attempts to slither inside the wearer, either consuming or taking control of him from within long enough to find a new host. Either way, it is often fatal for the wearer. 
If the wearer of the armor loses consciousness, he must make an immediate Willpower Test. Failure indicates that the armor is trying to crawl within him, suffocating him at a rate of 1d10 Damage per round, ignoring armor or Toughness Bonus. Death indicates that the armor has taken control of the victim, crudely manipulating his body into doing its bidding---normally, hunting down another unwitting target. 
All, AP 7, WT 2kg, Cost 15,000, Very Rare