The year is 2055, more than thirty years after the events of Zero Hour, Earth suffers a catastrophic collision with meteorites. The world is thrown into turmoil as large swathes of land are annihilated. Four factions, the ADF (Asian Democratic Federation), WEA (West European Alliance), WLF (World Liberation Front), and AC (American Confederacy) are at war for control of the remaining already harder to find resources as well as the preservation of their nations and geopolitical interests. Welcome to Deep Impact.
Interesting. I'm guessing some kind of anti-tank laser/particle beam?
Just as it says in the DESCRIPTIONS which can be found in that - MORE INFO LINK - it's armed with a recoilless rifle.