OK SB1820

Amends Oklahoma's dueling statute (Section 662) to specify that fighting a duel "with a deadly weapon" constitutes a Class C1 felony, regardless of whether death or injury occurs

Establishes consent as an affirmative defense to assault and battery charges (Sections 644 and 647) when the conduct did not threaten or inflict serious bodily injury

Consent defense applies only when the victim knew the conduct was a risk of their occupation, recognized medical treatment, or a scientific experiment using recognized methods

Defines "serious bodily injury" as harm creating substantial risk of death, causing death, serious permanent disfigurement, or protracted loss/impairment of bodily function

Consent defense is not available when the offense occurred as a condition of initiation or continued membership in a criminal street gang

Effective date: November 1, 2026