AZ HB2451

Establishes severe threat order of protection (STOOP) mechanism allowing family members, household members, significant others, probation officers, behavioral health professionals, and peace officers to petition courts to prohibit firearm possession by individuals who pose danger to self or others.

Creates two types of orders: ex parte temporary severe threat orders lasting 14 days (issued without respondent present) and severe threat orders lasting one year, both requiring respondent to surrender all firearms to law enforcement.

Sets evidentiary standards including credible threats of death or serious injury, acts of violence, cruel animal mistreatment, dangerous mental health issues, violent crime convictions, or abuse of controlled substances or alcohol.

Prohibits firearm possession for those subject to valid orders; violation is a class 4 felony; those knowingly allowing access to firearms for prohibited persons face class 4 felony charges.

Transfers petitions involving minor respondents to juvenile court; requires parent or legal guardian notification and appointment of guardian ad litem for minors; makes false sworn statements in STOOP petitions a class 5 felony instead of class 6.