When people think about the Swedish, they are often not associated with their military power. However, that does not mean that anyone should mess around with them. During the time of the USSR, there was a constant worry that the Russian powers would attempt to attack and invade Sweden. To thwart any attack, the country installed armories that the public could access. These would provide weaponry and supplies to those in the area and allow for the immediate defense of Sweden.
We are not sure that the USSR didn't attempt to invade Sweden since the 18th century because of these armories, but they are a deterrent against anyone trying to mess with Sweden.