The Artillerist

From publisher blurb: More than just a ranger, the artillerist is the undisputed master of bows. A martial controller that stays in the rear of the battle, the artillerist offers builds such as the sniper. All 30 levels of powers are included, as well as class-specific feats, multi-class feats, and more, the Artillerist is as deadly as he is hidden.