Colorado § 18-12-303 - Identification markings for large-capacity magazines - rules.
Full text of Colorado Colorado Revised Statutes § 18-12-303 — Identification markings for large-capacity magazines - rules., with citation guidance and answers to common questions.
§ 18-12-303. Identification markings for large-capacity magazines - rules.
(1) A large-capacity magazine that is manufactured in Colorado on or after July 1, 2013, must include a permanent stamp or marking indicating that the large-capacity magazine was manufactured or assembled after July 1, 2013. The stamp or marking must be legibly and conspicuously engraved or cast upon the outer surface of the large-capacity magazine.
(2) The bureau may promulgate such rules as may be necessary for the implementation of this section, including but not limited to rules requiring a large-capacity magazine that is manufactured on or after July 1, 2013, to bear identifying information in addition to the identifying information described in subsection (1) of this section.
(3) A person who manufactures a large-capacity magazine in Colorado in violation of subsection (1) of this section commits a class 2 misdemeanor and shall be punished in accordance with section 18-1.3-501.
Source: L. 2013: Entire part added, (HB 13-1224), ch. 48, p. 146, § 1, effective July 1.
ANNOTATION
This section and §§ 18-12-301 and 18-12-302 represent a reasonable exercise of the state's police power and thus are constitutional because the discrete legislative purpose in enacting the statutes, to reduce the number of people who are killed or shot in mass shootings, lies within the state's police power; the statutes are reasonably related to the legitimate governmental purpose of reducing deaths from mass shootings; and limiting magazine size to fifteen rounds of ammunition does not unreasonably burden the right to self-defense. Rocky Mountain Gun Owners v. Polis, 2020 CO 66, 467 P.3d 314.
PART 4
FIREARMS - DEALERS
Editor's note: This part 4 was added with relocations in 2018. Former C.R.S. section numbers are shown in editor's notes following those sections that were relocated.
Source: official Colorado text · Last verified 2026-08-27
Frequently Asked Questions About Colorado § 18-12-303
What does Colorado Revised Statutes § 18-12-303 cover?
Section 18-12-303 ("Identification markings for large-capacity magazines - rules.") is part of the Colorado Revised Statutes, the codified statutory law of Colorado. It sets out the legal rule or procedure described in the text above. Statutes are amended regularly, so always verify against the official source.
How do I cite Colorado § 18-12-303?
A common citation format is "Colorado Revised Statutes § 18-12-303" (Colorado). Legal writing may require the code abbreviation, section number, and year or edition. Match the style required by your court, professor, or publisher.
Is this the official text of Colorado law?
No. This page is for research and education and may not include the most recent amendments. For official current law, check the Colorado official source linked on this page or consult a licensed Colorado attorney.
How does Colorado § 18-12-303 apply to my situation?
Statutes are interpreted in context, and application depends on your specific facts. Only a licensed attorney in Colorado can advise on how this section applies to you. Contact your state or local bar association for a referral.
Sources & Verification
Not legal advice. Verify against the official source and consult a licensed attorney in Colorado.