Complex sentence: The GM Cannon II is also heavier armed than its predecessors, sporting two shoulder-mounted beam cannons in addition to a 90mm machine gun, a beam saber and two head vulcans.
Split into simpler sentences: The GM Cannon II is also heavier armed than its predecessors. It is equipped with two shoulder-mounted beam cannons, and can carry a 90mm machine gun as well as a beam saber and two head vulcans.