Improved Snap Shot
You can take advantage of your opponent’s vulnerabilities from a greater distance, and without exposing yourself.
Prerequisite: Dex 15, Point-Blank Shot, Rapid Shot, Snap Shot, Weapon Focus, base attack bonus +9.
Benefit: You threaten an additional 10 feet with Snap Shot.
Normal: Making a ranged attack provokes attacks of opportunity.
Source: Ultimate Combat, p. 106