By David Blake Johnson, Joshua J. Robinson, Daniel Semenza, and Alexi Thompson

We test the effectiveness of several common gun prevalence proxy variables against what are arguably the best measures of gun prevalence: firearm sales and concealed carry permits. With a comprehensive count of gun sales and concealed carry permits (by county and year) in the states of Pennsylvania and Massachusetts, we make two main observations: First, gun sales/concealed carry permits are positively correlated with federal firearm licenses (gun dealers) per mile. Second gun sales/concealed carry permits are not significantly positively correlated with federal firearm licenses per capita or the proportion of gun suicides to total suicides. We then discuss why this occurs and the limitations of using legal gun sales as a gun prevalence measure. Last, we show how the competing measures differ in terms of their associations with gun homicide. We find our preferred measure to have a strong positive association with gun homicides while many others do not. Consequently, we advise researchers to use gun dealers as a measure of gun prevalence and specifically in a way that considers markets bleeding over arbitrary lines (e.g., county, city, or neighborhood).

Unpublished Paper, (May 25, 2022), 41p,

By: Azrael, Deborah and Blocher, Joseph and Cook, Philip J. and Hemenway, David and Miller, Matthew,

For a paper that has not yet been through peer review or even been formally published, William English’s "2021 National Firearms Survey" has been remarkably prominent in gun rights advocacy and scholarship. As of June 2024, it has been cited in roughly 50 briefs, invoked at oral argument in the Supreme Court and multiple courts of appeals, and regularly cited in public writings and published academic work.

This response is offered in the spirit of a peer review. Our focus is on methodological issues, questionable statistical results, and problematic conclusions. Because of serious methodological issues, the draft fails to provide a reliable estimate of the number of defensive gun uses, the stock of AR-15s, or the actual protective value of or frequency with which AR-15 type firearms have been used. The paper should not be used as an authoritative source.

Duke Law School Public Law & Legal Theory Series No. 2024-50

By Terry L. Schell, Samuel Peterson, Brian G. Vegetabile, Adam Scherling, Rosanna Smart, Andrew R. Morral

To understand how rates of firearm ownership may be affected by public policy and how they may affect crime rates or other key outcomes in the United States, researchers need measures of firearm ownership at the state level. As part of the Gun Policy in America initiative, RAND researchers developed annual, state-level estimates of household firearm ownership by combining data from surveys and administrative sources. First, they used a small-area estimation technique to create state-level ownership estimates for each of 51 nationally representative surveys assessing household firearm ownership rates. They then used structural equation modeling to combine these survey-based estimates with administrative data on firearm suicides, hunting licenses, subscriptions to Guns & Ammo magazine, and background checks into the final measure of household firearm ownership. The resulting measure represents the proportion of adults living in a household with a firearm for each state in each year between 1980 and 2016. Other researchers can use these annual, state-level measures to test theories about the relationship between firearm ownership and crime, injury, and public policy.

Santa Monica, CA: RAND, 2020. 78p.

By Connor Brooks

This report is the 18th in a series produced by the Bureau of Justice Statistics. It details the number of applications for background checks for firearm transfers and permits received by the Federal Bureau of Investigation (FBI) and state and local checking agencies. It also describes the types of permits or checks used by each state, the number of denials issued by these agencies, and the reasons for denial.

Highlights

• The FBI and state and local checking agencies received about 16.7 million applications for firearm transfers and permits in 2019 and 25.0 million applications in 2020.

• About 243,000 (1.5%) applications for firearm transfers and permits were denied in 2019, and 398,000 (1.6%) were denied in 2020.

• The FBI received about 12.8 million applications in 2020 and denied 185,000 (1.5%), while state and local checking agencies received more than 12.2 million applications and denied about 212,000 (1.7%).

• In 2020, state checking agencies denied 2.7% of purchase permits, 1.8% of instant checks, 1.2% of exempt carry permits, and 0.2% of other approvals.

Washington, DC: U.S. Bureau of Justice Statistics, 2023. 33p.

By James D. Wright, Peter H. Rossi, Kathleen Daly with the assistance of Eleanor Weber-Burdin

FRON THE JACKET: “The United States is one of the most heavily armed private populations in world history; one-half the households in the country possess at least one firearm, and the total number of firearms in private hands is well over 100 million. The rates of criminal violence in the United States are among the highest in the world. What, if anything, is the relationship between these facts? UNDER THE GUN provides -for the first time a comprehensive review and analysis of both the published and the unpublished literature on weapons, crime, and violence in the U.S.

Each chapter explores the issues and trends which have been widely debated over the years. Some of the topics covered include: the number of guns in private hands, recent upward trends in firearms sales, demographic characteristics of gun owners, uses of guns in self-defense, patterns of violent crimes committed in the U.S., characteristics of weapons used in crimes, public opinion on gun control issues, and the effectiveness of gun control laws.”

"Wright/Rossi/Daly bring balanced judgment, the best data available, and careful analysis to each issue. They outline an agenda for research which is sensi ble and critical to the matters at hand. The book is more than 'state of the art.' It separates data from inference, logic from value-based argument, and identifies the sorts of issues which cannot be settled by empirical inquiry..” — James Short.

NY. Aldine Publishing Company. 1983. 350p.

By Abigail Vegter and Donald P. Haider-Markel

Researchers have considered the role of perceived threat and fear of crime in shaping attitudes about gun regulation. We contribute to this literature by examining whether gun owners, who tend to oppose gun regulations, moderate their gun views when exposed to a gun-related threat. We argue that although exposure to threat can increase the desire to be armed, gun owners primed with a threat may soften their views on gun regulation relative to non-gun owners. We employ an experiment embedded within a nationally representative survey to test our hypotheses. Our analysis of the data from our survey supports the notion that gun owners generally oppose gun regulations, but exposure to a gun-related threat moderates their opposition to gun regulations. We discuss the limitations of our study and conclude with a discussion of the implications of these results for understanding public support for gun regulation in America.

Sociological Perspectives. Volume 65, Issue 1, February 2022, Pages 119-132

Tara D. Warner https://orcid.org/0000-0002-1382-1217 twarner2@uab.edu, Tara Leigh Tober, […], and David F. Warner'

Protection is now the modal motivation for gun ownership, and men continue to outnumber women among gun owners. While research has linked economic precarity (e.g., insecurity and anxiety) to gun ownership and attitudes, separating economic well-being from constructions of masculinity is challenging. In response to blocked economic opportunities, some gun owners prioritize armed protection, symbolically replacing the masculine role of “provider” with one associated with “protection.” Thus, understanding both persistently high rates of gun ownership in the United States (in spite of generally declining crime) alongside the gender gap in gun ownership requires deeper investigations into the meaning of guns in the United States and the role of guns in conceptualizations of American masculinity. We use recently collected crowdsourced survey data to test this provider-to-protector shift, exploring how economic precarity may operate as a cultural-level masculinity threat for some, and may intersect with marital/family status to shape gun attitudes and behaviors for both gun owners and nonowners. Results show that investments in stereotypical masculine ideals, rather than economic precarity, are linked to support for discourses associated with protective gun ownership and empowerment.

Sociological PerspectivesVolume 65, Issue 1, February 2022, Pages 97-118

By Ye Liu ; Michael Siegel; Bisakha Sen

Question  How are states’ firearm laws associated with firearm-related deaths in nearby states?

Findings  In this pooled cross-sectional analysis involving firearm laws and firearm-related deaths from 2000 to 2019 in the 48 contiguous states, a permit requirement for purchasing all firearms had an interstate association with decreased total firearm-related deaths and homicide, whereas the prohibition of firearm possession for individuals who have committed a violent misdemeanor had an interstate association with decreased firearm suicide.

Meaning  These findings suggest that synergic legislative action to implement firearm laws in proximate states may help prevent firearm-related deaths.

  AMA Network Open. 2022;5(11):e2240750. doi:10.1001/jamanetworkopen.2022.40750 (Rep  

By Claire Boine , Michael Siegel and Abdine Maiga 

Background: Although gun owners overwhelmingly support violence prevention policies, they are hesitant to speak up publicly to advocate for these policies. We tested a series of communication messages on gun owners’ level of support for various firearm violence prevention policies and on their willingness to engage in gun violence prevention advocacy. Methods: We conducted three consecutive experiments, testing a total of thirteen messages on a sample of gun owners over 18 years old who live in the U.S. The first was a random experiment, the second a quasi-experiment, and the third a randomized control trial. The goal of having these varied methods was to develop messages applicable to different contexts with different levels of information about the audience. Results: The most effective message was a script showing respect for gun owners’ decisions to purchase a firearm and proposing a balanced policy roadmap to end gun violence, which led to an increase in gun owner’s willingness to engage in eight diferent advocacy activities. We also found a value-based message conveying loyalty to increase support for domestic violence related prohibitions and willingness to engage in advocacy for gun violence prevention policies. Conclusions: Public health professionals need to develop communication strategies that are aligned with gun owners’ values and that afrm respect for gun culture and for gun owners’ decisions to own a gun.

Injury Prevention. 9(30): 2022

By Kathleen Grene, Amani Dharani and Michael Siegel

•   Background While gun owners are frequently surveyed, we are not aware of any study that has examined principles held by gun owners that underlie their gun policy opinions, or their opinions about specific provisions of each policy. To fnd the common ground between gun owners and non-gun owners, this paper aims to answer the following: (1) What underlying principles affects gun owner support for gun policies; (2) how do gun owners’ attitudes change depending on the specific provisions within these policies? Methods In May 2022, a survey was administered by NORC at the University of Chicago and completed by adult gun owners (n=1078) online or by phone. Statistical analyses were performed using STATA. The survey used a 5-point Likert scale to evaluate gun owners’ principles and attitudes toward frearm regulation, such as red fag laws, and possible provisions to these policies. Focus groups and interviews were conducted with 96 adult gun owners and non-gun owners to further clarify points in the survey for the former and to ascertain support for the same policies and their potential provisions for the latter. Results The principle that gun owners identified with the most concerned keeping guns out of the hands of those with an increased risk for violence. There was significant overlap among gun owners and non-gun owners on policy support, especially with this central theme that those with a history of violence should be prevented from accessing a firearm. The degree of support for policies was different depending on what provisions were said to be included in the policy. For example, the degree of support for universal background checks ranged from 19.9 to 78.4% depending on the details of the legislation. Conclusion This research demonstrates common ground between gun owners and non-gun owners: It informs the gun safety policy community about gun owners’ views and principles on gun safety policy and which policy provisions impact their support for a given law. This paper suggests that an effective, mutually agreed upon gun safety policy is possible. 

  Injury Epidemiology (2023) 10:21   

By Smart, Rosanna; Morral, Andrew R.; Ramchand, Rajeev; Charbonneau, Amanda K.; Williams, Jhacova; Smucker, Sierra; Cherney, Samantha; Xenakis, Lea

3rd. Edition. From the Webpage: "In this report, part of the RAND Corporation's Gun Policy in America initiative, researchers seek objective information about what scientific literature reveals about the likely effects of various gun laws. In the third edition of this report, the authors incorporate more-recent research in their synthesis of the available scientific data regarding the effects of 18 state firearm policies on firearm deaths, violent crime, suicides, the gun industry, defensive gun use, and other outcomes. By highlighting where scientific evidence is accumulating, the authors hope to build consensus around a shared set of facts that have been established through a transparent, nonpartisan, and impartial review process. In so doing, they also illuminate areas in which more and better information could make important contributions to establishing fair and effective gun policies."

RAND Corporation. 2023. 104p.

By Wang-Sheng Lee and Sandy Suardi

The 1996-97 National Firearms Agreement (NFA) in Australia introduced strict gun laws, primarily as a reaction to the mass shooting in Port Arthur, Tasmania in 1996, where 35 people were killed. Despite the fact that several researchers using the same data have examined the impact of the NFA on firearm deaths, a consensus does not appear to have been reached. In this paper, we re-analyze the same data on firearm deaths used in previous research, using tests for unknown structural breaks as a means to identifying impacts of the NFA. The results of these tests suggest that the NFA did not have any large effects on reducing firearm homicide or suicide rates.

Melbourne. University of Melbourne. Melbourne Institute Working Paper Series Working Paper No. 17/08. 2008. 29p.

By Aaron Karp

Uncertainty about any firearms data requires systematic estimation that relies on a broad spectrum of sources and makes approximation unavoidable. The Small Arms Survey’s estimates of civilian firearms holdings use data gathered from multiple sources. However, with much of civilian ownership concealed or hard to identify, gun ownership numbers can only approximate reality. Using data from several different sources, at the end of 2017 there were approximately 857 million civilian-held firearms in the world’s 230 countries and territories. Civilian firearms registration data was available for 133 countries and territories. Survey results were used to help establish total gun civilian holdings in 56 countries. The new figure is 32 per cent higher than the previous estimate from 2006, when the Small Arms Survey estimated there were approximately 650 million civilian-held firearms. Virtually all countries show higher numbers, although national ownership rates vary widely, reflecting factors such as national legislation, a country’s gun culture, historical and other factors. While some of the increase reflects improved data and research methods, much is due to actual growth of civilian ownership.

Geneva: Small Arms Survey, 2018. 12p.

By Philip J. Cook and Jens Ludwig

The National Survey of Private Ownership of Firearms took place during November and December 1994 to gather information on the size, composition, and ownership of the gun stock in the United States; how and why guns are acquired; gun storage and carrying; and the defensive use of firearms against criminal attackers.

This national telephone survey used a list-assisted random-digit-dialing sampling method and produced a response rate of 44 percent or 59 percent, depending on the definition used. Results revealed that an estimated 192 working firearms are in private possession; about one-third of these are handguns. At least 40 percent of all handguns are semi-automatics. Only about 1 in 6 handguns have barrel lengths shorter than 3 inches. About one-fourth of adults personally own a firearm; this finding includes 42 percent of men and 9 percent of women. Gun ownership may be less popular among younger adults than among those ages 51 or older. Gun ownership is also most prevalent among middle-aged, middle-class white people from rural areas. Adults who have been arrested for a non-traffic offense are more likely to own a firearm than are other adults. In addition, about 10 percent of the adults own about 77 percent of the total stock of firearms. Overall, 46 percent of gun owners own some kind of gun primarily for protection against crime. Almost all owners report receiving some kind of instruction in the use of their firearms. About one in five of all gun-owning households keep a loaded and unlocked gun in the home. About one in six handguns are kept on the owner's person or in a motor vehicle. Estimates of defensive use of guns are similar to those of Kleck and Gertz, but survey-based estimates appear to be grossly in error for several reasons.

Washington, DC: Police Foundation, 1996. 112p.

By Topher L. McDougal, Daniel Montolio and Jurgen Brauer

This study represents an attempt to understand the U.S. firearms market – the largest in the world – in economic terms. A model of the underlying interplay of legal firearms supply and demand is a prerequisite for reliably evaluating the effectiveness of pertinent existing state and federal firearms policies, and to amend them as necessary. The stakes are high: compared to other nation-states, per capita firearms-related harm in the United States (including suicides and homicides) is exceptionally high and, within constitutional strictures, state and federal firearms policymakers increasingly view it as a major and pressing society-wide problem. Virtually all firearms in the U.S. are initially manufactured and sold legally. Solving a simultaneous equation model using the instrumental variable of natural disasters and employing a unique dataset of U.S. firearms prices and quantities, this paper models – we believe for the first time in the literature – the U.S. market supply of, and demand for, firearms. Encouragingly, we find that this market operates as any other would be expected to, with the notable exception that lagged nonmilitary firearms stocks generate new market demand in a positive feedback loop. We test as predictors of market performance federal firearms legislation as instances of policy, as well as of extraterritorial armed conflict, firearms industry concentration, crime, and technology gaps between U.S. and imported firearms. Except for the time-limited Federal Assault Weapons Ban (1994-2004), we find (restrictive) firearms legislation not to influence sales. We also find that acute external violent conflict and certain levels of violent crime, including homicides and mass shootings, drive up unit sales, and that higher industry concentrations in certain submarkets boost quantity supplied, suggesting economies of scale. Taken together, this study’s findings may provide some empirical support for firearms stock reduction programs to reduce the total volumes of civilian arms.

San Diego: Small Arms Data Observatory, 2020. 35p

By Quitterie de Labbey, Nils Duquet and Lore Smets

Project DIVERT is an international research project to contribute to the fight against illegal firearms markets in Europe. To this end, the project has investigated various methods by which legal firearms are diverted and become illegal. Because most illicitly held firearms in the European Union have a legal history, generating a better intelligence picture on firearms diversion is critical. It can help better understand the original transition of weapons into the illegal cycle and develop effective tools to stop such spillovers. This report examines firearms diversion through theft. It is part of a three-part series exploring previously under-researched diversion methods in the EU. Two additional studies deal with firearms diversion through fraud and non-regularization. We define the theft of firearms or ammunition as the deliberate act to take and remove firearms and/or ammunition of personal property with intent to deprive the legal owner from it.

Brussels: Flemish Peace Institute, 2021. 132p.