I lived near Zurich in the early 90s (Canadian) and would often see people headed off to military service on the normal, commuter trains with an assault rifle as part of their kit. I assumed everyone just took them home with them when their regular service was done and took them back when they revisited it next year. Most of my colleagues that did military service would go for a couple of weeks a year and loved it (you serve with people from the area you grew up in, I think, and they looked forward to seeing their buddies again, drinking some beer, etc.).