The Gorgon is a Grineer light machine gun standard issue to Heavy Gunners and Grineer Wardens, and wielded by Lieutenant Lech Kril. It has a small spool-up period during which it fires slowly, before reaching its maximum fire rate. chambered in .556
The Viper is a machine pistol of Grineer design issued to their Shield Lancers. It is the most portable weapon manufactured by the Grineer. Chambered in 9x18mm Makarov.