Zaphod72,
the SITPRI Trade Register (
http://armstrade.sipri.org/arms_trad...e_register.php) can be a useful source of information about international arms sales/transfers. However, I suspect that some of the information is not always 100% accurate – and I am sure that it is not comprehensive. Many arms sales/transfers do not make it onto the Register – for various reasons. It also does not always include foreign weapons made under licence – and the Greek arms industry produces a variety of such weapons (from LMGs to MBTs).
The Register could provide you with clues about foreign arms deliveries to Greece that you could cross-reference against your local sources – which could be more reliable.