Making a list of names...
AK
Ares
ArmTech
Barret
Beretta
Browning (Monobe)
Cavalier (NeoNET)
Ceska
Colt (Ares)
Defiance (Ares)
Eichiro
Enfield
Fichetti
FN (Monobe)
Franchi
HK
Ingram (Ares)
Izom (Renraku)
Mannlicher
Mitsubishi
Morrissey
Mossberg (Ares)
Nemesis Arms (Shiawase)
Nitama
Onotari (Saeder-Krupp)
Parashield (Mitsuhama)
PJSS
Raccor
Ranger Arms
Remington
Ruger (Ares)
Savalette
Seco
Shiawase Arms
Steyr
Stoner-Ares (Assuming this is Ares) 
Taurus
Terracotta (Renraku)
Ultimax (Renraku)
Victorinox
Walther
Yamaha
If anyone can help place some of these in the world...
Hey there, sorry to revive this old thread, but I'm very interested in this topic and the Colt info appears to be incorrectly sourced.
The corporate database shows that they are independent. Also, the wiki article cited as a source (German) shows that they're using "someone on the Internet" as a source (see
http://www.shadowiki.de/Colt_Industries). The folks who edited that wiki are also question the veracity of the Ares list (Ingram & Colt) which makes the whole thing very dubious.
Also, Walther is owned by Ruhrmetall AG. I *believe* H&K has some formal connection there as well, but am looking for a better source. Stoner-Ares... assuming Ares runs the show in that relationship.
AK
Ares
ArmTech
Barret
Beretta
Browning (Monobe, through FN Herstal)
Cavalier (NeoNET)
Ceska
Colt (Independent)
Defiance (Ares)
Eichiro
Enfield
Fichetti
FN (Monobe)
Franchi
HK
Ingram (Ares)
Izom (Renraku)
Mannlicher
Mitsubishi
Morrissey
Mossberg (Ares)
Nemesis Arms (Shiawase)
Nitama
Onotari (Saeder-Krupp)
Parashield (Mitsuhama)
PJSS
Raccor
Ranger Arms
Remington
Ruger (Ares)
Savalette
Seco
Shiawase Arms
Steyr
Stoner-Ares (assuming Ares)
Taurus
Terracotta (Renraku)
Ultimax (Renraku)
Victorinox
Walther (Ruhrmetall AG)
Yamaha
