North Dakota Century Code Title 62.1. Weapons § 62.1-01-03.1. Federal firearms laws--Limitations on enforcement

1. As used in this section, “firearm accessory” means an item used in conjunction with or mounted on a firearm but is not essential to the basic function of a firearm. The term includes a detachable firearm magazine.

2. An agency or political subdivision of the state and a law enforcement officer or individual employed by an agency or political subdivision of the state may not provide assistance to a federal agency or official or act independently with respect to the investigation, prosecution, or enforcement of a violation of a federal statute, order, rule, or regulation purporting to regulate a firearm, firearm accessory, or firearm ammunition enacted after January 1, 2021, if the federal statute, order, rule, or regulation is more restrictive than state law, unless:

3. This section does not prohibit an agency or political subdivision of the state or a law enforcement officer or individual employed by an agency or political subdivision of the state from providing assistance to a federal agency or official for an offense not related to firearms or an offense to which firearms are incidental, including a drug offense, homicide, assault, kidnapping, sex offense, or human trafficking.

4. This section does not prohibit law enforcement from providing assistance to a federal agency or official if the investigation also pertains to a felony violation of state law.