Sword and Pistol

Combat

You effortlessly pair melee and ranged weaponry.

Prerequisite: Dex 13, Point-Blank Shot, Rapid Shot, Snap Shot, Two-Weapon Fighting, base attack bonus +6.

Benefit: When you use the Two-Weapon Fighting feat while wielding a melee weapon and a crossbow or firearm, your attacks with the crossbow or firearm provoke no attacks of opportunity from foes that you threaten with your melee weapon.

Normal: Making a ranged attack provokes attacks of opportunity.

Source: Ultimate Combat