Choose one type of weapon (including unarmed strike or grapple) for which you have already selected Weapon Focus. You are a master at your chosen weapon.
You gain a +1 bonus on attack rolls you make using the selected weapon. This bonus stacks with other bonuses on attack rolls, including those from Weapon Focus.
You can gain Greater Weapon Focus multiple times. Its effects do not stack. Each time you take the feat, it applies to a new type of weapon.
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SECTION 15