Minigun

Mini-guns are the upgrade of Machine gunners, and the fastest good weapon to rush.

Main use
Mini-guns are often used in large amounts, to be able to deal constant damage to the opponent.

They can be rushed, 6 being a standard amount (2 groups, firing periodically), is pretty effective if you can bring them fast enough to surprise your opponent.

You can also use them to support your teammates, or to help out a bit your strategy, since they are good at destroying surface defense/anti-air.

Other uses
Some people like to use mini-guns as anti-air, because of the accuracy (low spread) of those. They fire in a pretty straight line, and are high velocity projectiles. The issue is that they don't fire automatically, and have a longer reload time.

They are very good at keeping map control, since they can destroy more easily any MG's, even if defended. Mini-guns will go through a few layers or wood, or a single door if fired constantly.

Trivia
 * The Mini Gunner looks to be based off of the m134 mini-gun but with a drum magazine
 * The Mini Gunner is belt fed which means its transporting the bullets from the drum to the mini gun on a medal belt