See also: Feats
You can make an additional attack during a round of combat.
Prerequisites: Base Attack Bonus +9, Double Attack with chosen Weapon
Effect: Choose a single Exotic Weapon or weapon group. When you use the Full Attack action, you may make one additional attack when wielding such a Weapon. However, you take a -5 penalty on all attack rolls until your next turn because you're trading precision for speed. The extra attack and penalty stack with those of Double Attack.
Normal: Making a single attack is a Standard Action.
Special: You may select this Feat multiple times. Each time you select this Feat, it applies to a different Exotic Weapon or weapon group.
Additional Triple Attack Effects 
Edit
Reference Book: Star Wars Saga Edition Starships of the Galaxy
Special: If you take this feat with heavy weapons, it works normally with vehicle weapons.
