This part of SB25-003 receives less attention than the eligibility-card provisions, largely because it took effect more than a year earlier. It has no express grandfather clause, and we have not identified an ordinary civilian licensing process specifically for a device covered by the new definition.
What SB25-003 actually did here
Most of what people know as "SB25-003" is the specified-semiautomatic-firearm purchase-permit scheme that took effect August 1, 2026. But the bill did something else entirely, in a completely separate section, that took effect months earlier under the bill's safety clause — reported as April 10, 2025, well before anyone was talking about eligibility cards.
SB25-003 added a definition now codified at C.R.S. 18-12-101(1)(u.3):
"'Rapid-fire device' means any device, part, kit, tool, accessory, or combination of parts that has the effect of increasing the rate of fire of a semiautomatic firearm above the standard rate of fire for the semiautomatic firearm that is not otherwise equipped with that device, part, or combination of parts."
It then amended C.R.S. 18-12-102(1) — Colorado's existing "dangerous weapon" statute, the same one we've written about regarding suppressors and short-barreled rifles — to add "rapid-fire device" directly to that list. Interestingly, the bill didn't just add a new category on top of an existing one: it specifically repealed the old "machine gun conversion device" definition and replaced it with this broader "rapid-fire device" language in the same stroke. That's a meaningfully wider net than what it replaced — "machine gun conversion device" was limited to parts that actually convert a firearm into a machine gun, while "rapid-fire device" reaches anything that increases rate of fire above standard, whether or not it technically creates automatic fire.
What that broad definition actually reaches
The statutory language doesn't name specific products — no list of "bump stock," "forced reset trigger," or "binary trigger" anywhere in the text. It's a functional definition: any device, part, kit, tool, or accessory that increases a semiautomatic's rate of fire above what it would otherwise have. The wording is broad and may reach forced-reset triggers, binary triggers, bump stocks, and other products designed to increase practical firing speed. But the statute does not name those products, define a firearm's "standard rate of fire," or explain how that baseline is measured. We have not found a published Colorado appellate decision applying the provision to a particular device. Treat product-specific classification as an unresolved application of broad statutory language—not as a tested conclusion.
The penalty and the limited statutory defense
Possessing a "dangerous weapon" under C.R.S. 18-12-102 is generally a class 5 felony. The rapid-fire-device provisions do not contain a grandfather clause. Section 18-12-102 includes an affirmative defense for specified officials acting in their duties or a person with a valid permit and license for the weapon, but we have not identified an ordinary civilian licensing process specifically for a Colorado rapid-fire device. That makes possession a high-risk issue, while leaving the classification of a particular product dependent on how the statutory definition applies.
The federal side is a separate, moving fight
Colorado's statute operates independently from the federal treatment of forced-reset triggers. ATF's 2025 settlement with Rare Breed ended federal enforcement against covered FRTs and contemplated returning seized devices. Colorado joined a multistate lawsuit over those returns. In April 2026, ATF agreed that it would not return the devices to people in states that prohibit them and would instead offer alternatives such as retrieval in a lawful jurisdiction or transfer to an eligible third party. That agreement reduces the immediate redistribution issue in Colorado but does not determine how Colorado's rapid-fire-device definition applies to every trigger product.
Bottom line
Colorado now treats a statutorily defined rapid-fire device as a dangerous weapon, provides no grandfather clause, and attaches serious criminal exposure to possession. Forced-reset triggers, binary triggers, and similar products may fall within that definition, but no published Colorado appellate decision has supplied a product-by-product test. Do not assume federal availability means Colorado possession is lawful; obtain device-specific advice from a qualified Colorado attorney.
As always, we are not lawyers—just Colorado citizens trying to understand the rules, statutes, and court decisions and share what we learn. The information on this website is for general informational purposes only and does not constitute legal advice, nor does it create an attorney/client relationship. The accuracy, completeness, or currency of the content is not warranted. Your use of content on this website is at your own risk. Consult an attorney about your specific circumstances.
