Crap, never realized that Speculo have AutoMedic. Mayby its because recently I mostly either crit them or simply electric pulse them :P
Having used the unknown ranger quite a bit. My big issue trying to get scavenger off is that his T2 CC weapon instakills whoever it wounds 90% of the time. And he's often not close enough to chase down unconscious enemies 16+ inches away. And irmandinhos tend to die too fast to ever really make use of it. I strongly think the skill should also proc automatically if you kill or null state an enemy in CC.
May I humbly suggest that the Unknown Ranger dispatch enemies with his Molotok and then Scavenge gear of their unconscious body?
So much shock, even the pistol is shock. Punch them dead? Otherwise prioritize stuff with 2 wounds or Remote Presence. Not sure Unknown Ranger problems qualify as first world problems, though.