cold_frost_ice

ME 2 uses heat sinking. So before your gun is about to overheat, you can eject a heat sinking cartridge. This way it's kind of like loading, but it's not because you not using ammo, your using a heat sink cartridge.

Me 2 uses a heat sink. So before the weapon is about to overheat, you release the heat sink and it doesn't. So your not using ammo, your using heat sinking cartridges.