As far as manufacturers go, there's...
Intratec (USA) - manufacturer of the TEC-9 and AB-10
Ingram (USA) - manufactred several firearms - most famously, the MAC-10
IMBEL (Brazil) - manufactures weapons for the Brazilian military
INDEP (Portugal) - former firearms manufacturer in Portugal.
IMI/IWI (Israel) - Israeli Military Industries (before privitization)/Israeli Weapons Industries (after privitization). Manufactured the Uzi, Jericho, Galil, Negev, and Desert Eagle. Also manufactured the FN FAL and MAG machine gun under license.
Istiglal (Azerbaijan). See below.
As for models:
IMP-221 (Individual Mulitpurpose Weapon): also known as the GUU-4/P.
INSAS (Indian Small Arms System). A family of rifles developed for the Indian military.
IST-14,5: 14.5x110mm sniper rifle developed by Istiglal in Azerbaijan.
Intervention: US-made sniper rifle manufactured by Chey-Tac.
One compound word that starts with gun is gunpowder
gun grenade gatling gun
uzi submachine gun
AR-15
The primer
Ak47
gun (the starter's gun)
Zabala and Zastava.
Zastava
· revolver · rifle
Jennings or Jiminez pistols.
Take It Away- The Used