As Mirvin_Monkey said in his journal, the grenade system is working. Currently, there is only a double tap grenade option; however, an option to prime while held (+gren1 / +gren2 from TFC) will be added. Per class grenades are implemented, with basic versions of the following grenades implemented/started:

• Normal frag grenade
  
• MIRV
  
• Concussion
  
• Napalm
  

My next task is to get basic versions of the rest of the grenade types working.