State Legality MatrixPistol BracesColorado
Statute-cited, not legal advice, last verified 2026-10-20
Restricted
Restricted. Buying or transferring a braced gas-operated semi-automatic handgun requires a sheriff-issued eligibility card. Effective 2026-08-01.
Controlling law: Colo. Rev. Stat. § 18-12-116 (SB25-003)
Contested entry
Colorado regulates the host, not the brace. The covered class is a gas-operated semiautomatic handgun with a detachable magazine, and the statute expressly folds blowback operation into gas-operated, so braced direct-impingement AR pistols and braced blowback PCC pistols are both caught while recoil-operated handguns such as Glocks and 1911s are excluded. This is a purchase and transfer eligibility requirement, not a possession ban: anything lawfully owned before August 1, 2026 is untouched and there is no registration. A federal challenge, Del Toro v. Polis, has a preliminary-injunction motion pending, and no court has blocked the requirement. Colorado has no outright short-barreled rifle ban, but C.R.S. § 18-12-102 makes possessing a short rifle a class 5 felony unless the owner has a valid permit and license for it, so the state defense for a shoulder-fired configuration turns on federal registration. The 15-round magazine cap applies to either configuration.
Federal law
The 2023 ATF stabilizing-brace rule was vacated nationwide and is not enforced, but that does not categorically make every brace-equipped firearm a pistol. Under 26 U.S.C. § 5845, federal classification still turns on whether the specific weapon is designed and intended to be fired from the shoulder. A brace-equipped firearm that meets the short-barreled-rifle definition is an NFA firearm; a configuration that remains a pistol is not. Since October 9, 2026, ATF does not enforce the NFA's Form 1 approval and registration requirements for SBRs, as a matter of enforcement discretion, but an SBR still needs an approved Form 5320.20 before interstate transport, state law still applies, and ATF says enforcement could resume if the policy changes. The federal making tax has been $0 since January 1, 2026 under the One Big Beautiful Bill Act.
Federal baseline verified 2026-10-09. Scope: Pistol stabilizing braces (SB Tactical, Maxim Defense, A3 Industries and similar) and the braced pistols they mount on. Short-barreled rifles and state assault-weapon feature tests are tracked as separate classes.
Common questions
Restricted. Buying or transferring a braced gas-operated semi-automatic handgun requires a sheriff-issued eligibility card. Effective 2026-08-01. Controlling law: Colo. Rev. Stat. § 18-12-116 (SB25-003).
The controlling law is Colo. Rev. Stat. § 18-12-116 (SB25-003). Buying or transferring a braced gas-operated semi-automatic handgun requires a sheriff-issued eligibility card.
Colorado's rule took effect 2026-08-01. Colorado regulates the host, not the brace. The covered class is a gas-operated semiautomatic handgun with a detachable magazine, and the statute expressly folds blowback operation into gas-operated, so braced direct-impingement AR pistols and braced blowback PCC pistols are both caught while recoil-operated handguns such as Glocks and 1911s are excluded. This is a purchase and transfer eligibility requirement, not a possession ban: anything lawfully owned before August 1, 2026 is untouched and there is no registration. A federal challenge, Del Toro v. Polis, has a preliminary-injunction motion pending, and no court has blocked the requirement. Colorado has no outright short-barreled rifle ban, but C.R.S. § 18-12-102 makes possessing a short rifle a class 5 felony unless the owner has a valid permit and license for it, so the state defense for a shoulder-fired configuration turns on federal registration. The 15-round magazine cap applies to either configuration.