The Colorado Gun Theft Law Goes into Effect, Why It Matters

A Colorado law created in response to a June 2020 murder went into effect yesterday. The Isabella Joy Thallas Act makes it a crime if someone fails to report any loss or theft of a firearm to the police within five days. How will this law affect Colorado gun owners? And what can gun owners across the country take from the implementation of this law?

The Murder of Isabella Thallas:

In June 2020, Isabella Thallas and her boyfriend walked their dog outside their Ballpark neighborhood apartment. According to reports, their dog defecated outside the apartment of the suspect called Close. Close became angered and yelled out the first-floor window at Thallas and her boyfriend.

colorado gun law

Close shot several rounds from an AR-15 at Thallas and her boyfriend named Simon from inside his apartment. Thallus was struck and died at the scene, while Simon was hit twice but survived.

Eventually, Police took Close into custody. The investigation uncovered that Close took the rifle he used in the crime from one of his friends. The close friend that Close took the rifle from happens to be a Denver Police Officer.

Close said that he took the rifle from his friend without the officer’s knowledge or permission. The rifle was not the officer’s patrol rifle, and as a result, the officer did not know his rifle was missing until he found that his friend Close was the shooter.

Colorado requires a background check on all firearm transfers. As a result, the officer could not have let Close borrow the rifle without transferring the gun through a federal firearms licensed dealer (FFL), even if he wanted to.


In response to this crime, lawmakers in Colorado crafted the Lost or Stolen Firearms bill (SB21-078), which went into effect yesterday.

The law states that a person who owns a firearm and believes it is lost or stolen must report it to a law enforcement agency within five days of the discovery. Punishment for a first offense is a $25 fine. The second and any subsequent violation is a misdemeanor with a fine of up to $500.

Representative Leslie Herod co-sponsored the legislation and had this to say to reporters.

Lost and stolen firearms are found at crime scenes across the country every day, and data shows that tens of thousands of firearms have been stolen in Colorado in recent years. Unreported lost or stolen firearms make our communities less safe, and it doesn’t have to be that way. Timely reporting of lost or stolen firearms saves lives, helps prevent crime, and it’s the simple and responsible thing to do if you realize your firearm is missing.

colorado lost or stolen gun law

Representative Leslie Herod

It’s easy to hear that statement and say, sure, it makes common sense. But is any of it true? Do unreported firearms make communities less safe? If so, what are the numbers? Does timely reporting of lost or stolen firearms save lives? If so, how and what are the numbers? Doe reporting lost or stolen firearms help prevent crime? Again, if it does, explain how.

I feel it is entirely possible to question the effectiveness or purpose of the law without diminishing the tragic loss of innocent life. We need to stop allowing politicians and media to assert “truth” without considering what they say.

Some Relevant Questions About the Law:

One relevant question would be, had SB21-078 been in effect at the time of this crime, would it have stopped this crime. The obvious answer is no. Not only did the law enforcement officer not know his rifle was missing, but the 5-day requirement in the law begins when the person becomes aware the gun is missing.

An argument could be that most people would know right away if someone stole a firearm from their home. Perhaps. But unless the person knows who stole the firearm, police can do nothing more than enter the firearm’s serial number into the FBI’s National Crime Information Center (NCIC) database.

The database helps return stolen property and track suspects to crime scenes, but it can’t prevent them from committing crimes. For example, let’s say the officer had a suspicion that Close was the person who stole his firearm. However, without a warrant, consent, or probable cause, police could not search Close’s home for the missing rifle.

SB21-078 doesn’t provide any additional justification to search someone’s home. In other words, it is a retroactive punishment of the gun owner that doesn’t seem to make the public any safer.

Even the punishment is diminutive. For example, a person faces a stiffer penalty for an expired parking meter than they would for failure to report the loss of a firearm. Part of punitive law is to dissuade a specific behavior because the punishment is unwanted. Do lawmakers think a $25 fine is sufficiently persuasive?

In one part of Herod’s statement, she said that reporting a lost or stolen firearm is the “simple and responsible thing to do.” I agree that in most cases, it probably is simple. And reporting a lost or stolen firearm is a responsible thing to do. I also think there are many “simple and responsible” things people SHOULD do, but I don’t think police should arrest them if they don’t.

In Conclusion:

Do the lawmakers that drafted, argued, and voted for this law feel it will genuinely make Coloradans safer? I don’t claim to know what is in their hearts. I may be cynical. But, I will say that it appears that this is yet another example of politicians putting on an appearance that they care to distract from their incompetence.

What do you think about this law? Do you agree or disagree with my thoughts on the law? Will it make Colorado safer?


  1. J Smith on September 9, 2021 at 9:47 pm

    A nonsense law with no practical value. I have gu s I have not used in months or years and would likely not miss them for an extended period of time. This is an attempt at a feel good law with no useful purpose. I would immediately report a missing gun, if I knew it was missing as I think most gun owners would.

  2. Roland Rackham on September 19, 2021 at 2:38 pm

    So what happens if I report an AR as lost/stolen…
    …then I find it (probably in the couch cushions)…
    …I report it as found…

    Does the law require the police to remove it from the database?
    Or is this just a form of gun registration?

    Since the gun is permanently in the database, does this affect how I may dispose of it in the future?

    How does this law affect catastrophic loss? ie What if my boat sinks or house burns down. Or what of only part of the gun is missing, say an AR upper/lower. or bolt assembly?

    What if said gun is lost outside the state?

  3. David H. Nickerson on October 24, 2021 at 11:21 pm

    Years ago I had my firearm stolen and I reported the needed details to the local Law Enforcement here in Colorado. My question: (Would/Could) re-reporting the info of my firearm theft, change, or make it a better chance of, being recovered?

  4. Carlton on November 28, 2021 at 3:24 pm

    Great article! Obviously the governing body did NOT think this through probably the same folks who designed the Afghanistan debacle. No disrespect to the unfortunate situation; this “law” appears to be an emotional reaction —title of the law says all one needs to know. Nothing enforceable in this that would’ve changed what the “Close” character did. No difference than Vaccine Cards & Mask conformity charade—I respect the virus not the undocumented ‘science’ & fictions of government🇺🇸

  5. Ioannis Them on June 9, 2022 at 12:27 pm

    I’ve purchased my guns legally in Colorado over the years. If they are stolen and I don’t report, how can they be traced to me?

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