In Borderlands, there are four classes. One of those classes is Roland the Soldier. His action skill is to deploy a turret. One of his skills is called Barrage and it "increases the number of shots ...
In Borderlands, there is a skill called Ransack. With a class mod, it's possible to push the effect of this over 5 out of the 5 skill point natural maximum. However, some skills have no extra effect ...