"A damaged handgun, I wonder what it was doing down here." - inventory description
This is the second weapon you will find in the game, it is the fastest ranged weapon in the game but doesn't do as much damage as the Shotgun. It is found in the sewers, right by a human eye. It's not a reliable weapon, however, since it can randomly jam when you shoot it.
This weapon can help you get an ending
Like the knife this doesn't have any special things in new game+, but it does stay with you if you gained it before