California Code, Family Code - FAM § 3064

(A) Having a parent who has committed acts of domestic violence, if the court determines that the acts of domestic violence are of recent origin or are part of a demonstrated and continuing pattern of acts of domestic violence.

(B) Sexual abuse of the child, if the court determines that the acts of sexual abuse are of recent origin or are part of a demonstrated and continuing pattern of acts of sexual abuse.

(2)(A) In determining whether there is a showing of immediate harm to the child, the court shall consider a parent's illegal access to firearms and ammunition, including, but not limited to, whether a parent is prohibited from having firearms and ammunition.

(B) “Illegal access to firearms and ammunition” includes the possession, purchase, or receipt of a firearm or ammunition in violation of state or federal law, a restraining order, a protective order, or an injunction, or a condition of probation or parole.