Antineutronium Cannon

The Antineutronium Cannon is an extremely powerful ship to ship cannon built experimentally by the Hyperion Federation.
It fires an immense rod of antimatter with the same density as neutronium (neutron star material), which is colloquially known as antineutronium. This is where the weapon gets its name from. To make handling of such massive quantities of antimatter significantly easier, the whole gun is made of antimatter and to protect it from stray particles it has a thin layer of Hardlight coated over it. The gunner aims using a camera but other than that it is fully automated. It is one of the few weapons utilizing Ω Extreme-Energy Technology. Thus it is considered a future weapon of the HF.
The Antineutronium Cannon, though extremely powerful, is susceptible to fire. If destroyed, the antimatter that comprises the weapon will likely annihilate and cause an extemely powerful explosion that would easily tear a planet apart. However, due to the exterme strength of Ω technology, this never leads to the starship it is mounted on being destroyed. Instead, the HF often manufactures a new Antineutronium Cannon as a replacement and continue firing. Though not the most reliable weapon for a non-superluminal Ω weapon, its sheer power makes it a fearsome weapon indeed. As the weapon uses an approximately equaivalent matter/antimatter raction as propellant, the weapon can achieve a muzzle velocity of approximately 0.866c as a tremendous amount of matter and antimatter react in the breech and send the antineutronium rod projectile towards a target at obscene velocities. This velocity can also cause the cannon to have an extremely massive armour penetration value and ensure the entire antineutronium rod reacts with enemy armour and possibly even expose the interior of the enemy ship to the massive, supernova-like explosion of the rod annihilating. Projectiles fired by the Antineutronium Cannon will react with dark matter after firing, causing the projectiles to appear extremely bright. Due to the extreme density of the rod, however, this has a negligible effect on both the velocity and mass of the projectile and causes it to heat up slightly.