Poison Rounds is a weapon Attachment.
Descrition
Poison Rounds makes every projectile the player fires poisonous, so there are high chances the enemy will die from Poison. This attachment is useless if you use it on weapons that normally fire poison too (Acid Hound and Paralyzer). You can combine it with other Elemental weapons to make double elemental effect. It also decreases damage dealt to enemies by 15%.