By Nicholas Walton
BBC News, Sarajevo
A new month-long initiative to encourage Bosnians to hand in illegal weapons comes in to force on Sunday.
Many weapons are still left over from the Bosnian War
Those handing over their small arms will be entered into a lottery, with prizes including motor scooters and kitchen appliances.
Bosnia-Hercegovina is still awash with weapons left over from the Bosnian War of the early 1990s.
Crime and gangland violence is often fuelled by shootings or hand-grenade attacks.
The UN Development Programme says hundreds of thousands of illegal weapons are still in the country.
Despite this illegality, it is still possible to find machine guns such as AK47s openly advertised for sale in newspapers.
News bulletins also throw up more unusual uses for arsenals left over from wartime.
In October, a mosque near the city of Mostar was attacked by a man using an old rocket-propelled-grenade launcher.
And there was also a recent story involving a teenager who threatened her father with a hand grenade in an argument over paying for a mobile phone bill.
The father expressed surprise that his daughter had managed to get hold of a grenade from her friends, rather than simply use one of his own collection.