From Mechwarrior Living Legends Wiki
AutoCannons, or AC's, and their variations are the most common Ballistic Weapons, and like other Ballistic Weapons, fire actual projectiles, much like modern-day firearms. All AutoCannons are ammo-dependent, and feature an "overheat" mechanic, in which continuous fire of the weapon without time to "cool down" will result in a debilitating jam that will render the AutoCannon inoperable for an extended period of time. Autocannons will also fire beyond their listed range, but with reduced damage; there is also a set maximum range at which AutoCannon rounds will air burst, causing light splash damage.
Autocannons in MWLL are designated as follows:
- BA AC2
- BA Bear AC