See PCs 195 - 199 for instances when homicide might be excusable or justifiable.
12031. (a) (1) A person is guilty of carrying a loaded firearm ...
(j) (1) Nothing in this section is intended to preclude the
carrying of any loaded firearm, under circumstances where it would
otherwise be lawful, by a person who reasonably believes that the
person or property of himself or herself or of another is in
immediate, grave danger and that the carrying of the weapon is
necessary for the preservation of that person or property. As used in
this subdivision, "immediate" means the brief interval before and
after the local law enforcement agency, when reasonably possible, has
been notified of the danger and before the arrival of its
(2) A violation of this section is justifiable when a person who
possesses a firearm reasonably believes that he or she is in grave
danger because of circumstances forming the basis of a current
restraining order issued by a court against another person or persons
who has or have been found to pose a threat to his or her life or
safety. This paragraph may not apply when the circumstances involve a
mutual restraining order issued pursuant to Division 10 (commencing
with Section 6200) of the Family Code absent a factual finding of a
specific threat to the person's life or safety. It is not the intent
of the Legislature to limit, restrict, or narrow the application of
current statutory or judicial authority to apply this or other
justifications to defendants charged with violating Section 12025 or
of committing other similar offenses.
Upon trial for violating this section, the trier of fact shall
determine whether the defendant was acting out of a reasonable belief
that he or she was in grave danger.
(k) Nothing in this section is intended to preclude the carrying
of a loaded firearm by any person while engaged in the act of making
or attempting to make a lawful arrest.
(l) Nothing in this section shall prevent any person from having a
loaded weapon, if it is otherwise lawful, at his or her place of
residence, including any temporary residence or campsite.