Original thread for the One-Shot pistol is too old to bump and nobody is willing to model for it.
One-Shot Pistol
You don't have to make a fancy model, just reskin a default gun to white or something. It only has one bullet, and it does enough damage to instakill if it hits the head. Inaccurate at anything longer than short range due to the spread. Bodyshots do 25 damage.
Killing a bot, vehicle, or player with it will regain a bullet. If you have no bullets left, attempting to fire will instead perform a (somewhat weak) melee attack.