Several years ago, after the release of a computer game "Stalker", a new movement appeared among Russian youths. The so-called stalkers are mainly 14-20-year-old students who are fond of drinking cheap stuff like "Jaguar" in various abandoned, secret or simply unusual places. As the fans of the previously mentioned game, stalkers do not forget to create the appropriate atmosphere - they put on camouflage, take portable radio transmitters, gas masks, guns and a lot of other junk with themselves.
As a general rule, the lion's share of equipment isn't bought but stolen from unguarded shelters and warehouses. They call the stolen things "swag" (like in the game). So everything that is not bolted to the floor and does not exceed the lifting capabilities of a schoolboy is called in this way.