Assault rifles are the all-in-one tool for Rangers who want to be tactically useful in almost any situation. Take this training if you are a team player who values dependability over flash. Assault rifles have good range, good Armor Penetration, good damage and multiple firing modes.
However, they use up a significant amount of Action Points per shot, ammo is hard to find and expensive, and they lose accuracy in close quarters.
The skill determines base accuracy and critical hit chance.