2011 ORS § 166.660¹
Unlawful paramilitary activity

(1) A person commits the crime of unlawful paramilitary activity if the person:

(a) Exhibits, displays or demonstrates to another person the use, application or making of any firearm, explosive or incendiary device or any technique capable of causing injury or death to persons and intends or knows that such firearm, explosive or incendiary device or technique will be unlawfully employed for use in a civil disorder; or

(b) Assembles with one or more other persons for the purpose of training with, practicing with or being instructed in the use of any firearm, explosive or incendiary device or technique capable of causing injury or death to persons with the intent to unlawfully employ such firearm, explosive or incendiary device or technique in a civil disorder.

(2)(a) Nothing in this section makes unlawful any act of any law enforcement officer performed in the otherwise lawful performance of the officers official duties.

(b) Nothing in this section makes unlawful any activity of the State Department of Fish and Wildlife, or any activity intended to teach or practice self-defense or self-defense techniques, such as karate clubs or self-defense clinics, and similar lawful activity, or any facility, program or lawful activity related to firearms instruction and training intended to teach the safe handling and use of firearms, or any other lawful sports or activities related to the individual recreational use or possession of firearms, including but not limited to hunting activities, target shooting, self-defense, firearms collection or any organized activity including, but not limited to any hunting club, rifle club, rifle range or shooting range which does not include a conspiracy as defined in ORS 161.450 (Criminal conspiracy described) or the knowledge of or the intent to cause or further a civil disorder.

(3) Unlawful paramilitary activity is a Class C felony.

(4) As used in this section:

(a) Civil disorder means acts of physical violence by assemblages of three or more persons which cause damage or injury, or immediate danger thereof, to the person or property of any other individual.

(b) Firearm has the meaning given that term in ORS 166.210 (Definitions).

(c) Explosive means a chemical compound, mixture or device that is commonly used or intended for the purpose of producing a chemical reaction resulting in a substantially instantaneous release of gas and heat, including but not limited to dynamite, blasting powder, nitroglycerin, blasting caps and nitrojelly, but excluding fireworks as defined in ORS 480.110 (Definitions for Oregon Fireworks Law) (1), black powder, smokeless powder, small arms ammunition and small arms ammunition primers.

(d) Law enforcement officer means any duly constituted police officer of the United States, any state, any political subdivision of a state or the District of Columbia, and also includes members of the military reserve forces or National Guard as defined in 10 U.S.C. 101 (9), members of the organized militia of any state or territory of the United States, the Commonwealth of Puerto Rico or the District of Columbia not included within the definition of National Guard as defined by 10 U.S.C. 101 (9), members of the Armed Forces of the United States and such persons as are defined in ORS 161.015 (General definitions) (4) when in the performance of official duties. [1983 c.792 §2; 1987 c.858 §3; 2001 c.666 §§26,38; 2005 c.830 §27; 2009 c.610 §7]