In season 2 of Man in the High Castle, we're introduced to a local ruthless leader of the Pacific States Resistence, Gary Connell (Callum Keith Rennie). On two occations (episode 2.01, The Tiger's Cave) he points and shoots his pistol at Julianna Crain (Alexa Davalos), which results her on both occations to go unconscious with seemingly no gun-shot wounds.
My question is, Is the pistol Connell used on Julianna some kind of "advance technology" gun/pistol that just renders people unconscious or is possible that he was just using blanks?
Note: The TV series Fringe references a lot of Philip K. Dick works and The Observers have special guns that do something similar. It was why I was wondering if that IS what this is and/or if it originates from MitHC novel or another PKD work?