Almost all shops in center of town lies on the main street Storgatan. Nothing that you can't buy everywhere else in Sweden though.
Two larger centers of shopping malls lies in the east of town called Samarkand (http://www.samarkand.se/) and I11 after the former regiment. Both reachable by bus nr 3.
There is a Swedish army surplus store not too far from the city center. Follow Liedbergsgatan to the south, cross the railroad tracks and take right on the first crossing.
