Fireworks laws in Colorado

(1) It shall be unlawful for any person not licensed as a display retailer, wholesaler, or exporter under the provisions of section 24-33.5-2004 to bring any fireworks including permissible fireworks into this state. Retail purchasers shall not purchase fireworks by mail order or receive any fireworks in Colorado by mail, parcel service, or other carrier. All fireworks sales and deliveries to retail purchasers in Colorado shall be made in Colorado and shall be conducted only by persons licensed pursuant to this part 20.

(5) Except as provided in this section and in section 24-33.5-2003, it shall be unlawful for any person to possess or discharge any fireworks, other than permissible fireworks, anywhere in this state.

(1) Except as provided for in subsection (6) of this section, it shall be unlawful for any person to knowingly furnish to any person who is under sixteen years of age, by gift, sale, or any other means, any fireworks, including those defined as permissible fireworks in section 24-33.5-2001 (11).

Division 1.4 consists of explosives that present a minor blast hazard. Examples are common fireworks, toy caps, empty primed grenades, and some small arms ammunition.
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341.2 Mailability, Packaging, and Marking
Explosives are generally prohibited from being mailed under 18 U.S.C. § 1716. The following conditions apply for mailing Hazard Class 1 items:
International Mail : All explosives are prohibited.
Domestic Mail via Air Transportation: All explosives are prohibited.
Domestic Mail via Surface Transportation: Generally, explosives are prohibited, with exceptions for Division 1.4S toy propellant devices and safety fuses that have been approved by the director, Product Classification before mailing (refer to 214 for contact information). A shipping paper is required.

UPS Prohibited Items
Examples of items prohibited by UPS include, but are not limited to the following:
Shipments prohibited by law
Bank bills, notes or currency
Common fireworks

We do not accept for delivery:
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Fireworks
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FedEx accepts certain classes and divisions of hazardous materials for transport. Before you ship, please refer to the following list to ensure your packages contain only accepted hazardous materials.
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1.4 1
Explosives
1.4/Explosive 1.4
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1 Except fireworks.

§ 1500.17 Banned hazardous substances.
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(3) Fireworks devices intended to produce audible effects (including but not limited to cherry bombs, M-80 salutes, silver salutes, and other large firecrackers, aerial bombs, and other fireworks designed to produce audible effects, and including kits and components intended to produce such fireworks) if the audible effect is produced by a charge of more than 2 grains of pyrotechnic composition; except that this provision shall not apply to such fireworks devices if all of the following conditions are met:
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(8) Firecrackers designed to produce audible effects, if the audible effect is produced by a charge of more than 50 milligrams (.772 grains) of pyrotechnic composition (not including firecrackers included as components of a rocket), aerial bombs, and devices that may be confused with candy or other foods, such as “dragon eggs,” and “cracker balls” (also known as “ball-type caps”), and including kits and components intended to produce such fireworks except such devices which meet all of the following conditions:
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(9) All fireworks devices, other than firecrackers, including kits and components intended to produce such fireworks, not otherwise banned under the act, that do not comply with the applicable requirements of part 1507 of this chapter, except fireworks devices which meet all the following conditions: