The M224-A2 Tyrant is a light weight 7.62mm LMG used by the ISA. This weapon sports heavy fire power and is used mostly by regulars. This weapon features both the stopping power of an M224 MOMAG and the portability of a M224-A1 LMG making this a deadly and efficient weapon on the battlefield.
The Tyrant is not a mainstreamed weapon and is out used by its more popular brother, the M224-A1 LMG, which is of a smaller caliber (6.8 SPC). In the series, it is only seen being used by Rico in Killzone: Liberation.
The M224-A2 appears to have been inspired by the M240 Minimi rechambered in 7.62 NATO.