X12 Scrapmaker TFP

The X12 Scrapmaker is a highly powerful, multi-barreled weapon analogous to the Minigun weapon used on Earth. The X12 requires a few seconds to "charge up", during which its rate of fire is very low, before unleashing its full destructive power and extremely high rate of fire. It's most effective at close range.

War for Cybertron
X12 Scrapmakers were used during the later days of the Great War between the Autobots and Decepticons. It was carried by Soldiers.

By the time the Ark was ready to launch, they had been supplanted by the X18 Scrapmaker.