The Morning Star is a grenade machine gun used by the Legitimacy Kingdom.
The Morning Star is a 150cm grenade machine gun, basically a weapon that fires coffee can-sized grenades like a machine gun. The grenades have a radius of 10 meters. It also has a secondary 5mm sniper round that is used when the enemy is near a hostage or computer. Since it's heavy and has a lot of recoil, it's usually fixed on a stand or attached to a helicopter or armored vehicle, though a powered suit is able to carry one.
While it's known for holding the high score in attacks on terrorist compounds, the Morning Star is also infamous for topping the list for friendly fire, as it creates a storm of anti-personnal shrapnel that fills up narrow areas inside buildings that are lethal to anyone not wearing a powered suit.