More Guns, Less Crime

1. Concealed Handgun Laws Significantly Reduce Violent Crime Rates

When state concealed-handgun laws went into effect in a county, murders fell by about 8 percent, rapes fell by 5 percent, and aggravated assaults fell by 7 percent.

Empirical evidence. Extensive county-level data across the United States from 1977 to 1996 consistently demonstrate that the adoption of nondiscretionary ("shall-issue") concealed-handgun laws leads to a substantial reduction in violent crimes. These laws, which require authorities to issue permits to qualified applicants without subjective discretion, correlate with significant drops in murder, rape, and aggravated assault rates. The reductions are not merely coincidental but are directly linked to the implementation of these laws.

Quantifiable impact. If all states without nondiscretionary laws had adopted them in 1992, an estimated 1,400 murders, 4,200 rapes, and 60,000 aggravated assaults would have been prevented annually. This translates to a substantial monetary gain in reduced victim costs, estimated at $5.7 billion in 1992 dollars. The impact is particularly pronounced for violent crimes, suggesting a direct deterrent effect on criminals who fear encountering armed victims.

Consistent findings. The observed crime reductions are robust across various statistical models and control variables, including arrest rates, demographic shifts, and economic factors. The longer these laws are in effect, the greater the decline in violent crime, indicating a cumulative deterrent effect as more citizens obtain permits and criminals adjust their risk assessments. This consistent pattern underscores the direct link between increased concealed handgun permits and decreased violent crime.

2. Criminals Respond Rationally to Deterrence, Adapting Their Behavior

To an economist such as myself, the notion of deterrence—which causes criminals to avoid cab drivers, "dope boys," or homes where the residents are in—is not too surprising.

Substitution effect. Criminals, like economic actors, respond to incentives and disincentives. When the risk of direct confrontation with a potentially armed victim increases due to concealed-handgun laws, criminals tend to shift towards less risky offenses. This "substitution effect" explains why violent crimes decrease while property crimes, such as auto theft and larceny (which involve minimal victim contact), may see small increases.

Risk assessment. Surveys of convicted felons reveal a significant fear of armed victims, often more so than of police. This fear influences their target selection and modus operandi. For instance, American burglars, facing a higher likelihood of armed homeowners, spend more time "casing" houses to ensure no one is home, resulting in a lower "hot burglary" rate compared to countries with stricter gun control.

Deterrence in action. The principle of deterrence is not limited to "rational" humans; even animals adjust their behavior based on costs. In the context of crime, higher probabilities of arrest, conviction, and longer prison terms consistently lead to fewer violations. Concealed-handgun laws introduce a new, unpredictable cost for criminals, making violent encounters less appealing and prompting a rational shift in criminal activity.

3. The Benefits of Concealed Carry Far Outweigh Accidental Deaths and Suicides

The reduction in murders is as much as eight times greater than the total number of accidental deaths in concealed-handgun states.

Net positive impact. While concerns about increased accidental deaths and suicides with more guns are understandable, empirical evidence shows no statistically significant increase in either category following the adoption of concealed-handgun laws. The number of lives saved from reduced murders alone far exceeds the total number of accidental handgun deaths nationwide, even under the most pessimistic assumptions.

Accidental deaths. Data from the Mortality Detail Records indicate that accidental handgun deaths remain consistently low and are not significantly impacted by concealed-handgun laws. For example, if all states without these laws had adopted them, the increase in accidental handgun deaths would be less than one per year, a negligible figure compared to the thousands of violent crimes prevented. Other common household items, like swimming pools or bathtubs, account for far more accidental child deaths annually.

Suicide rates. Similarly, there is no discernible relationship between concealed-handgun laws and suicide rates. While the presence of a gun might offer a means for impulsive action, the data suggest that individuals intent on suicide will find alternative methods if firearms are unavailable. The debate must consider the availability of substitute methods and whether they are less attractive or dangerous to others.

4. Vulnerable Populations, Including Minorities and Women, Benefit Most from Concealed Handguns

Allowing potential victims a means for self-defense is more important in crime-prone neighborhoods.

Disproportionate gains. Despite common perceptions and political rhetoric, concealed-handgun laws provide the greatest crime-reduction benefits to the most vulnerable populations: residents of urban, high-crime areas, minorities, and women. These groups often face the highest rates of violent crime and may have limited access to immediate police protection, making self-defense capabilities particularly impactful.

Empowering women. Concealed handguns act as a significant equalizer, dramatically enhancing a woman's ability to defend herself against violent attacks. While fewer women than men obtain permits, the deterrent effect on crimes like rape is substantial. The data show that an additional woman carrying a concealed handgun reduces the murder rate for women by three to four times more than an additional man reduces the murder rate for men, reflecting the greater change in defensive capability for women.

Impact on minority communities. Counties with higher percentages of black residents experience particularly large drops in violent crime, especially robberies and rapes, after the implementation of concealed-handgun laws. This suggests that in areas where the power imbalance between law-abiding citizens and criminals is most acute, the ability to carry a concealed weapon provides a crucial layer of protection. Policies that inadvertently disarm poor minorities, such as bans on low-cost firearms, risk exacerbating this vulnerability.

5. Mass Public Shootings Are Dramatically Reduced by Concealed Carry Laws

When different states passed right-to-carry laws during the nineteen years we studied, the number of multiple-victim public shootings declined by a whopping 84 percent.

Deterring mass attackers. Individuals who commit mass public shootings, though often deranged, still exhibit a rational concern for their own safety and success. The possibility of encountering armed citizens in a public place significantly raises the risk to the attacker, making such venues less attractive targets. This deterrence is evident in the dramatic reduction of these horrific events in states with concealed-handgun laws.

Quantifiable impact. In states that adopted nondiscretionary concealed-handgun laws between 1977 and 1995, the number of multiple-victim public shootings plummeted by 84%, with deaths declining by 90% and injuries by 82%. While there might be a slight initial increase in incidents as attackers rush to act before widespread permit adoption, the long-term trend shows a near elimination of such events after several years.

Strategic advantage. Concealed-handgun laws offer a unique advantage over visible security measures like uniformed police. Attackers cannot identify armed citizens in advance, creating an unpredictable risk that deters them from targeting crowded public spaces. This "halo effect" means that even a small percentage of armed citizens can create a significant deterrent for potential mass murderers.

6. Many Common Gun Control Measures Are Ineffective or Counterproductive

The evidence from 1994 indicates that the Brady law has been associated with significant increases in rapes and aggravated assaults, and the declines in murder and robbery have been statistically insignificant.

Brady Law's impact. The federal Brady Law, requiring background checks and waiting periods, has shown no statistically significant evidence of reducing crime. In fact, empirical analysis suggests it has been associated with significant increases in rapes and aggravated assaults. This indicates that while it may inconvenience some criminals, it primarily disarms law-abiding citizens who need quick access to firearms for self-defense.

Safe-storage laws. Laws mandating safe storage of firearms, intended to prevent accidental deaths, appear to have unintended negative consequences. These laws are significantly related to increases in rapes, robberies, and burglaries. This suggests that by making firearms less accessible for self-defense, such laws may embolden criminals, who perceive a reduced risk of encountering armed victims.

Other regulations. Measures like "one-gun-a-month" purchase rules also show associations with increased murders, robberies, and aggravated assaults. While seemingly minor inconveniences, these regulations can hinder individuals from quickly acquiring multiple firearms for legitimate self-defense needs or for gifts, without demonstrating a clear benefit in crime reduction. The overall pattern suggests that laws restricting law-abiding citizens' access to guns often fail to deter criminals and may inadvertently increase crime.

7. Concealed Carry is the Most Cost-Effective Method for Reducing Crime

Of all the methods studied so far by economists, the carrying of concealed handguns appears to be the most cost-effective method for reducing crime.

High return on investment. Compared to other crime-fighting strategies like hiring more police or increasing incarceration, concealed-handgun laws offer a significantly higher return on investment in terms of crime reduction per dollar spent. The private costs of obtaining a permit and a handgun are minimal compared to the billions of dollars in victim costs saved annually.

Economic efficiency. Each additional concealed-handgun permit is estimated to reduce total victim losses by $2,500 to $5,000 per year. This substantial societal benefit far exceeds the private costs of gun ownership and licensing, suggesting that permits are currently issued at suboptimal rates. The "free ride" effect, where armed citizens deter crime for everyone, means individuals bear all costs but only a fraction of the benefits, leading to under-provision of this public good.

Policy implications. The economic analysis strongly indicates that policies making it easier for law-abiding citizens to carry concealed handguns are a highly efficient means of improving public safety. Conversely, high permit fees disproportionately deter the poor and most vulnerable, reducing the overall crime-reduction benefits of these laws. Legislators should prioritize policies that maximize the deterrent effect by facilitating access for those who need it most.

8. Crime Can Be Displaced to Unarmed Neighboring Areas, but Overall Deterrence Prevails

For all the violent-crime categories, adopting a concealed-handgun law reduces the number of violent crimes in your county, but these results also show that criminals who commit murder, rape, and robbery apparently move to adjacent states without the laws.

Spillover effect. When a state adopts a nondiscretionary concealed-handgun law, criminals may be deterred from committing crimes within that state but may displace their activities to neighboring jurisdictions without such laws. This "spillover effect" is evident in the observed increase in violent crime rates in adjacent counties in neighboring states, precisely when the adopting counties experience a drop.

Overall societal benefit. While crime displacement implies that the initial benefits to a single adopting state might be partially offset by increased crime elsewhere, the long-term trend suggests a net reduction in crime when more states adopt these laws. The greatest reductions in violent crime occur when a county and its neighbors both allow concealed carry, indicating that widespread adoption maximizes deterrence.

Rational criminal behavior. The displacement phenomenon further supports the theory of rational criminal behavior. Criminals actively seek out easier targets, and the presence of concealed handguns in one area makes unarmed areas relatively more attractive. This dynamic highlights the importance of a comprehensive approach to concealed-handgun laws across regions to achieve maximum crime reduction.

9. Robust Data and Methodology Support the Findings, Despite Political and Academic Attacks

I have attempted to answer numerous questions. For example, do higher arrest or conviction rates reduce crime? What about changes in other handgun laws, such as penalizing the use of a gun in the commission of a crime, or the well-known waiting periods? Do income, poverty, unemployment, drug prices, or demographic changes matter?

Rigorous analysis. The study employs the largest and most comprehensive dataset ever assembled for crime research, encompassing over 54,000 observations across 3,000 U.S. counties over eighteen years. It utilizes pooled cross-sectional, time-series regression analysis, controlling for an unprecedented array of factors including arrest rates, conviction rates, sentence lengths, demographic shifts, economic indicators, and other gun control laws. This robust methodology addresses common criticisms of earlier, less comprehensive studies.

Addressing endogeneity. A key strength of the methodology is its explicit treatment of endogeneity, recognizing that crime rates can influence the adoption of gun laws and arrest rates, and vice-versa. Techniques like two-stage least squares are used to disentangle these complex causal relationships, consistently strengthening the evidence for the deterrent effect of concealed-handgun laws. The findings are not merely correlations but demonstrate a causal link.

Transparency and replication. The author made all data publicly available to other academics, leading to numerous independent replications and extensions of the research. The vast majority of these studies have confirmed the core findings, with some even suggesting a larger deterrent effect than initially reported. This openness and subsequent validation by other researchers underscore the academic integrity and reliability of the study's conclusions.

10. The Public Debate on Guns Is Often Skewed by Misinformation and Media Bias

Unfortunately, the images from the screen and the newspapers are often unrepresentative or biased because of the sensationalism and exaggeration typically employed to sell news and entertainment.

Sensationalism over substance. Media coverage of gun-related issues frequently prioritizes dramatic, negative events—like mass shootings or accidental deaths—while largely ignoring the far more common instances of defensive gun use. This selective reporting creates a distorted public perception of the costs and benefits of gun ownership, leading to an exaggerated fear of firearms. Defensive gun uses, often involving no shots fired, are rarely reported, contributing to this imbalance.

Political motivations. Gun-control advocacy groups often engage in personal attacks on researchers and misrepresent findings, rather than engaging in substantive debate on the merits of the research. Claims about funding sources, academic credentials, or methodological flaws are frequently made without factual basis, aiming to discredit politically inconvenient conclusions. This tactic diverts attention from the empirical evidence and hinders informed public discourse.

Misleading statistics. Public figures and organizations often cite statistics out of context or use flawed methodologies to support their arguments. Examples include misrepresenting the age demographics of "children" in gun-related deaths or selectively comparing crime trends over short, cherry-picked periods. This deliberate manipulation of information further obscures the complex realities of gun violence and the effectiveness of various policies.

Last updated: February 18, 2026