Craftable big nasty syringe.

[Marquesas]

It is difficult to get adequate ammo for the zip gun, it has a nifty chance of blowing up in your face and it holds a single bullet. It's a good but risky alternative to fire any kind of ammunition you come across.

This on the other hand is:

• Overpowered as a craftable item. Remember instant droppers, when MDs were self-entitled shits with sleep toxin the moment you inconvenienced them the slightest bit? That was 5 units. This is up to 120. I can name countless chemicals which are easy to access without ever setting foot in access restricted areas and are lethal or seriously debilitating at this dose. Cue botanists shooting you up with 120 units of superheated Dans because you stole a weed leaf.
  
• Underpowered as a traitor item. Apart from the fact that I don't see how an assembly like this could be syndicate-exclusive (jeez it's a syringe, a watering can and an oxygen tank), it's a higher capacity, unstealthy sleepy pen. At ridiculous numbers like 50 or 120, it really doesn't make a difference which we're talking, but why would you want to willingly out yourself when you can do it from the safety of a sleepy pen? Is there a difference between this and stunning someone then making them swallow a pill of death? (Hint: Nope.)