Greater Weapon Specialization[General]
Choose one type of weapon for which you have already selected unarmed strike or grapple as your weapon for purposes of this feat.
Proficiency with selected weapon, fighter level 12th.
You gain a +2 bonus on all damage rolls you make using the selected weapon. This bonus stacks with other bonuses on damage rolls, including the one from Weapon Specialization (see below).
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.
A fighter may select Greater Weapon Specialization as one of his fighter bonus feats.