states / CO

Colorado gun legislation

Firearm-related bills and ballot measures in Colorado, each linked to the official legislature or elections page.

2 tracked · 2 enacted · updated

CO HB26-1144 Signed into law Restricts

Concerning measures to prohibit the use of three-dimensional printing to manufacture firearms

Prohibits knowingly making a potentially functioning firearm, unfinished frame or receiver, large-capacity magazine or rapid-fire device by 3D printing (defined to include additive and subtractive manufacturing). Federally licensed manufacturers and accredited gunsmithing programs are exempt. A first offense is a class 1 misdemeanor and a second or later offense is a class 5 felony.

What it does: Bans 3D printing of firearms and key components by unlicensed persons.

Ghost guns / 3D printing Magazines

last action
: Governor Signed
next step
Signed. No further legislative step scheduled.
effective
Not yet known
chamber
House · 2026 Regular Session
sponsor
Reps. Lindsay Gilchrist, Andrew Boesenecker; Sens. Tom Sullivan, Katie Wallace
companion
none recorded
official page
leg.colorado.gov/bills/hb26-1144
status history (4)
  1. Signed into law Governor Signed
  2. Passed both chambers Senate Third Reading Passed 3/30; House concurred in Senate amendments
  3. Passed one chamber House Third Reading Passed
  4. Introduced Introduced in House
sources (1)

added 2026-10-23 · updated 2026-10-23

CO SB25-003 Signed into law Restricts

Semiautomatic Firearms and Rapid-Fire Devices

Prohibits manufacturing, distributing, transferring, selling or purchasing a "specified semiautomatic firearm" (semiautomatic rifles or shotguns with a detachable magazine, and gas-operated semiautomatic handguns with a detachable magazine) on or after August 1, 2026, with exceptions. Buyers who complete specified hunter education and firearms safety courses, or an extended safety course, are exempt from the purchase prohibition, along with listed transfers such as to law enforcement or by inheritance.

What it does: Requires safety training before buying most semiautomatic firearms with detachable magazines.

Assault weapons Permits & licensing Magazines

last action
: Governor Signed
next step
Main provisions in effect since 2026-08-01.
effective
Purchase rules apply from 2026-08-01
chamber
Senate · 2025 Regular Session
sponsor
Not yet known
companion
none recorded
official page
leg.colorado.gov/bills/sb25-003
status history (4)
  1. Signed into law Governor Signed
  2. Passed both chambers House Third Reading Passed 3/24; Senate concurred in House amendments - Repass
  3. Passed one chamber Senate Third Reading Passed with Amendments - Floor
  4. Introduced Introduced in Senate
sources (1)

added 2026-10-23 · updated 2026-10-23