|Special Effect||"Chance to poison enemies"|
The Greaser has a chance to poison enemies. It has a very high rate of fire and is most useful at mid to close range, due to its low accuracy, but high rate of fire. However, ammo remains low, only 32 rounds upgraded, which is not enough to kill full health enemies.
Use the greaser as your secondary weapon if your primary weapon is a long range weapon, that way you can do more damage when enemies get closer to you.
RCP 90 is a much better custom weapon because it has the same high fire rate as Greaser if upgraded, and more ammo.