Does not appear to include firearms, or even some classes of crew served weapons. The source db is here: http://www.sipri.org/databases/armstransfers you can get 'get everything' query and take a peak at the categories yourself. From a quick skim, its basically every possible type of actual weapon (as in actually kills things) except firearms and crew served machine guns... and I guess grenade launchers. Portable anti-tank and anti-aircraft weapons are on the list. A lot of aircraft and naval avionics is on the list as well.