Colorado - Session 2026
Title: Prohibit Three-Dimensional Printing Firearms & Components
The bill defines 3-dimensional printing to mean additive and subtractive manufacturing. The bill prohibits each of the following: Knowingly manufacturing or producing a firearm, unfinished frame or receiver, large-capacity magazine, or rapid-fire device (firearm or firearm component) by 3-dimensional printing. The prohibition does not apply to a federally licensed firearm manufacturer , an instructor or student of an accredited gunsmithing program, or an institution that operates an accredited gunsmithing program. Unlawful three-dimensional printing of a firearm or firearm component is a class 1 misdemeanor; except that a second or subsequent offense is a class 5 felony. Possessing, in circumstances that indicate intent to manufacture a firearm or firearm component in violation of state law or intent to distribute, digital instructions that may be used to program a 3-dimensional printer or a computer numerical control (CNC) milling machine to manufacture or produce a firearm or firearm component. The prohibition does not apply to a federally licensed firearm manufacturer who possesses digital instructions in circumstances that indicate intent to manufacture a firearm or firearm component. Knowingly offering to sell or distributing digital instructions that may be used to program a 3-dimensional printer or CNC milling machine to manufacture or produce a firearm or firearm component. for an activity that constitutes a violation of specified existing state law concerning unlawful conduct involving an unserialized firearm, frame, or receiver. The prohibition does not apply to distribution of digital instructions to or between an instructor and student of an accredited gunsmithing program, or an institution that operates an accredited gunsmithing program, when the distribution is solely for educational instruction. Unlawful distribution of digital firearms production instructions is a civil infraction. The prohibitions in the bill only apply to potentially functional firearms and firearm components. The bill does not prohibit possession of digital instructions in circumstances that indicate intent to distribute to, or distributing digital instructions to, a federally licensed firearm manufacturer. A violation of any of the prohibitions in the bill is a class 1 misdemeanor; except that a second or subsequent offense is a class 5 felony. (Note: Italicized words indicate new material added to the original summary; dashes through words indicate deletions from the original summary.) (Note: This summary applies to the reengrossed version of this bill as introduced in the second house.)
| Date | Event | Detail |
|---|---|---|
| 2026-02-04 | Introduced | Bill introduced |
| 2026-03-30 | Status | enrolled |
| 2026-04-02 | Latest Action | House Considered Senate Amendments - Result was to Concur - Repass |
| Bill | Title | Status |
|---|---|---|
| HB 1017 | Criminal Restitution Prohibited for Insurers | enacted |
| HB 1103 | Report Child Sexual Assault & Courtroom Testimony | enrolled |
| HB 1123 | Preventing Sexual Abuse in Jails | passed_lower |
| HB 1232 | Court Costs Assessed to Juveniles | enrolled |
| HB 1234 | Access to Records of Child Abuse or Neglect | passed_lower |
| HB 1302 | Colorado Bureau of Investigation Firearms InstaCheck Unit Operating Hours | passed_lower |
| HB 1397 | Multiple Employer Health Trust Funding | introduced |
| HB 1405 | Cash Fund Transfers to General Fund | introduced |