Massive amounts. Europe is one of the biggest arms exporters in the world. In 2012 the European arms industry had a turnover of 96 billion, and about 40 billion of that was exported.1 But again: many weapons were not even included in that total because they were not considered to be weapons by the exporting EU member states. Also companies and governments are not very eager to give many details about arms exports. And so only a part of the total export is visible.
As regards light weapons (guns, pistols, machine guns) and ammunition, the US is the world leader but it is followed by Italy, Germany, Austria, Switzerland and Belgium. Moreover, as regards the export of light military hand weapons, Belgium is in second place between the US and France!
As regards the large conventional weapons (tanks, rockets, heavy artillery, fighter planes), the EU countries are good for more or less 30% of the total worldwide arms trade. About half of that is intra-European, i.e. between countries in the EU itself. But all the rest of it is exported to countries outside Europe.4
Six EU countries are in the worldwide top ten countries that export conventional weapon: Germany, France, the United Kingdom, Spain, Italy and the Netherlands. After these come: Sweden, Switzerland, Norway and Belgium (in 19th place).
3 Vlaams Vredesinsituut, Bussiness as Usual, Nils Duquet, march 2014, p.8
4 GRIP, Compendium 2014, Sophie Durut et Luc Mampaey, p.29-30