Exotic Firearms Proficiency
Choose a weapon type from the following list: cannons, heavy machine guns, grenade launchers, and rocket launchers.
Benefit: The character makes attack rolls with the weapon normally.
Normal: A character who uses a weapon without being proficient with it takes a –4 penalty on attack rolls.
Special: A character can gain this feat as many as four times. Each time a character takes the feat, he or she selects a different weapon group.