The Infinity Canon operates off the same mechanics as the Flash's infinite mass punch, except with a 305mm shells instead of fists. There are two variants: the Mark I and the Mark II.

Mark I Infinity Canon: First, a 305mm shell is accelerated angularly  (rotated) to anywhere between 0.5 and 0.99 times the speed of light by a continuously rotating electromagnetic field. Then, the shell is fired out an aim-able barrel by either a gun powder charge (Mark I-A) or a large compressed spring (Mark I-B).

Mark II Infinity Canon: First, a 305mm shell is accelerated horizontally in a giant cyclotron-like device. The cyclotron is embedded in the hull of the ship containing the weapon as space-saving measure and uses a series of high-powered electro-magnets to accelerate the shell. Once the shell reaches top speed, 0.99C, the shell is released through a unidirectional fixed barrel mounted on exterior of the ship's hull. This model performs similarly to the Mark XLIV Rail Gun. The only difference is that the Mark XLIV is not able to reach velocities higher than 0.01C.

All models of the Infinity Canon produce the same results, the destruction of an entire planet. When run through an analysis program, the computer simulations shows a few variants of the results.

The first result is that the planet experiences a impact similar to a world killer asteroid. This result is more common with the Mark I, when the shell is accelerated to between 0.5C and 0.7C.

The second, the planet explodes. This result is more common with the Mark II, or when the Mark I reaches velocities higher than 0.7C. The explosion is caused by the rapid compression, then subsequent decompression of the planet's inner core.

Third, the shell passes straight through the planet. This result is very rare, but is more common with the Mark II. When the shell passes through the planet, it's velocity disrupts the rotational equilibrium of the planet's inner core. This causes the core to stop rotating. When this happens, the planet stops the production of it's electromagnetic field and become highly vulnerable to cosmic radiation. The simulations have shown that the process of planet wide sterilization to occur anywhere between six to twelve hours. This is the only result that allows for a planet wide evacuation, if the enemy chooses to do so.

Fourth, and lastly, one of the three previous scenarios occurs,  but the shell keeps moving. Being that an object with an infinite mass moving at any velocity would have an infinite momentum, and thus become an unstoppable force. The simulations have shown atleast 100 results, out of millions, where the shell continues on with a slightly altered trajectory, impacting, exploding, or passing through other objects. These objects include, but are not limited to, nearby planets, moons, asteroids, ships (both friendly and hostile), and, yes, even stars. The shell only stops or appears to stop when coming in contact with a black hole.

These are classified as "last strike" weapons and are only to be used when all other ordinance and deterrences are proven to be ineffective.