This article has been updated for the 1.6 patch. All information should be correct and up-to-date
The Heavy Machine Gun is the Dreadnaught battleframe's signature weapon. It is a high damage, high rate of fire chain-gun that has multiple barrels that spin in order to keep the average barrel temperature down. The Heavy Machine Gun's alternate fire mode allows the barrels to spin up without firing the weapon - allowing the weapon to then fire without the initial warmup.