To see or shoot a Machine firearm in you dream recommends that your annoyance or animosity is wild. You have to hold your temper under tight restraints.

To see or shoot a machine gun in you dream suggests that your anger or aggression is out of control. You need to keep your temper in check.

To dream that somebody is shooting you with an automatic rifle suggests that a lot of indignation is being coordinated towards you.

To dream that someone is shooting you with a machine gun implies that a great deal of anger is being directed towards you.