A Stim gun, listen, im a medic main, I have all of my exp on medic so I think I know what I'm talking about. As a medic, the only way to heal people is your throwable med bag, but people are constantly moving around and not getting healed, so I think a medic only sidearm that fires syringes to heal people better. I think this would be great during team gun fights, where it's hard to sit still and heal people, so being able to heal my teammates from a distance would be nice.