Greater Weapon Focus

Combat

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.

Prerequisite: Proficiency with selected weapon, Weapon Focus with selected weapon, 8th-level fighter.

Benefit: 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.

Special: 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.

Source: Pathfinder Core Rulebook