PS20

The PS20 is a single shot next-gen pistol for use with undercover agents or special ops. It fires one ball of plasma in a straight line.

The PS20 can first be obtained in the Statue of Liberty. After that, it is extremely rare.

Tactics
The PS20 is completely useless. You can't hold more than one at one time, it can't kill a NSF troop with one chest shot, and there's about five or so throughout the entire game. If you find one, either fire it for shits and giggles or dump it.