Quantum Bombardment
Main and Currently (as of Patch 2.3) the only weapon of the Destroyer. launches 5 projectiles that do a base damage of 100/100 damage to hull/shields (1 projectile equals 100 damage, a full "volley" *as known to most* does 500 damage without upgrades.
It has a slight homing mechanism that allows it to curve and hit objects. Quantum Bombardment Can be upgraded for a cost of 10Y 90R with 25% more damage for 4 upgrades (25%/125 50%/150 75%/175 100%/200) per projectile. Quantum Leech and Chroniton Torpedoes can also be additions to augment Quantum Bombardment. Another passive ability of the Quantum Bombardment that is automatically applied is called Seismic Disturbance.