Colo. Rev. Stat. § 18-12-111 – Unlawful purchase of firearms - report to law enforcement - unlawful attempted purchase while subject to a voluntary waiver - penalties.

(1) Any person who knowingly purchases or otherwise obtains a firearm on behalf of or for transfer to a person who the transferor knows or reasonably should know is ineligible to possess a firearm pursuant to federal or state law commits a class 4 felony.
(2)
1. (a) Any person who is a licensed dealer, as defined in 18 U.S.C. sec. 921 (a)(11), shall post a sign displaying the provisions of subsection (1) of this section in a manner that is easily readable. The person shall post such sign in an area that is visible to the public at each location from which the person sells firearms to the general public.
2. (b) Any person who violates any provision of this subsection (2) commits a civil infraction.
(3)
1. (a) If a firearms dealer who holds a state permit to deal firearms pursuant to section 18-12-401.5 reasonably believes, knows or should know, or becomes aware after a transfer, that a person, including an employee, purchased or attempted to purchase a firearm in violation of subsection (1) of this section, the dealer shall report that information to a law enforcement agency with jurisdiction over the dealer's place of business.
2. (b) Failure to make the report required by this subsection (3) within forty-eight hours after the dealer becomes aware of an unlawful firearm purchase or attempted firearm purchase is a violation of state law concerning the sale of firearms and is subject to the penalties described in section 18-12-401.5 (7).
(4) [Editor's note: Subsection (4) is effective (see editor's note following this section)]
1. (a) A person who attempts to purchase a firearm while subject to a voluntary waiver of the right to purchase a firearm described in section 24-33.5-424.7 commits unlawful attempted firearm purchase while subject to a voluntary waiver. Unlawful attempted firearm purchase while subject to a voluntary waiver is a civil infraction and shall be punished by a fine of up to twenty-five dollars.
2. (b) Section 18-2-101 does not apply to conduct that constitutes a civil infraction pursuant to this subsection (4).

Source: L. 2000: Entire section added, p. 638, § 1, effective July 1. L. 2021: (2)(b) amended, (SB 21-271), ch. 462, p. 3212, § 347, effective March 1, 2022. L. 2024: (3) added, (HB 24-1353), ch. 492, p. 3458, § 5, effective July 1, 2025. L. 2025: (3)(a) amended, (SB 25-034), ch. 340, p. 1842, § 4, effective August 6; (4) added, (SB 25-034), ch. 340, p. 1842, § 4, effective (see editor's note).

Editor's note: Section 6(2) of chapter 340 (SB 25-034), Session Laws of Colorado 2025, provides that the act adding subsection (4) takes effect upon receipt of the notice to the revisor of statutes required by § 24-33.5-424.7 (8). As of publication date, the revisor of statutes had not received notice.

Cross references: For the short title (Colorado Voluntary Do-Not-Sell Act) and the legislative declaration in SB 25-034, see sections 1 and 2 of chapter 340, Session Laws of Colorado 2025.