Serbia is trying to promote itself as a major international weapons exporter, hoping to boost revenues to $500m this year.
Middle Eastern countries, including Iraq, Egypt and Algeria, are among its biggest clients.
In the past, Serbian arms dealers broke UN sanctions and sold weapons to Saddam Hussein, the deposed Iraqi leader.
Experts say the trade has since cleaned up, but doubts persist over the morality of some potential deals.
Al Jazeera's Barnaby Phillips reports from the capital, Belgrade.
Source: Al Jazeera