Your armor’s flexibility and your own training allow you to strike multiple times while moving.
Benefit(s): While using Spring-Heeled Style, whenever you use Shot on the Run or Spring Attack, you can attack two different creatures at any point in your movement. Each attack is made at your full attack bonus. Any creature that you attack in melee with this feat cannot make attacks of opportunity against you for that movement, as normal for Spring Attack.
Pathfinder Player Companion: Armor Master’s Handbook © 2016, Paizo Inc.; Authors: Alexander Augunas, Robert Brookes, Anthony Li, Luis Loza, and David Schwartz.