Greater Weapon Specialization (Combat)
Choose one type of weapon (including unarmed strike or grapple) for which you possess the Weapon Specialization feat. Your attacks with the chosen weapon are more devastating than normal.
Benefit: You gain a +2 bonus on all damage rolls you make using the selected weapon. This bonus to damage stacks with other damage roll bonuses, including any you gain from Weapon Specialization.
Special: You can gain Greater Weapon Specialization multiple times. Its effects do not stack. Each time you take the feat, it applies to a new type of weapon.