By Alaina De Biasi, Anthony A. Braga, Brad Velasquez & Garen Wintemute 

Background: Privately made firearms (PMFs) or “ghost guns” are homemade, unserialized, untraceable firearms that have been increasingly used in violent crime in the United States. Very little is known about the types of PMFs recovered by law enforcement agencies and the crimes associated with these recoveries. This lack of information limits effective violence prevention policies and practices. Comparative analysis of PMF recoveries in specific cities helps clarify whether local PMF patterns and characteristics vary or reflect more general trends. This research advances epidemiological understanding of emergent violent gun injury prevention challenges by identifying variations in recovered PMF types and use in violent, drug, and weapon-related offenses in Los Angeles and San Diego, California.

Methods: Conjunctive analysis of case configurations (CACC) identifies patterns among observations (i.e., case configurations) and calculates their probability associated with a given outcome. CACC was used to identify the most common types of PMFs recovered by the Los Angeles (LAPD) and San Diego (SDPD) police departments. For each department and offense type, case configurations with above-average probabilities of offense involvement were determined. Comparisons across departments were made to identify similarities and differences in PMF characteristics and usage.

Results: PMFs were more likely to be involved in violent and weapon-related offenses in Los Angles but more likely to be involved in drug-related offenses in San Diego. In both cities, the 9 mm Polymer 80 handgun was the dominant PMF. However, 9 mm handguns were most likely to be involved in weapon-related offenses in Los Angeles compared to 0.40 handguns in San Diego. Furthermore, large-caliber handguns tended to display above-average probabilities of involvement in violent and drug offenses in Los Angeles. Long guns were represented in case configurations with above-average probabilities of involvement in substantive crimes, including violence.

Conclusions: Comparative analyses of PMF recovery patterns in Los Angeles and San Diego reveal meaningful contextual variations in PMF characteristics and suggest intentional firearm type selections by offenders. The results support increased regulation of PMFs and highlight the importance of efforts to identify and disrupt the illicit supply of large-caliber PMF handguns and PMF long guns.

Injury Epidemiology volume 11, Article number: 17 (2024)

By Brady United Against Gun Violence

Understanding the source of America’s gun violence epidemic is essential to building effective solutions to prevent it. For decades, laws passed at the behest of the gun industry have shielded important information from public view, making it nearly impossible to understand how, and from where, guns are funneled into the criminal market. Brady has used Freedom of Information Act (FOIA) requests to uncover information in an attempt to better understand how guns make their way from the legal marketplace to ultimately being used in crime. This report examines federal records that identify gun dealers subject to the Bureau of Alcohol, Tobacco, Firearms and Explosives’ (ATF) Demand Letter 2 program — a program created to identify firearms dealers that sell the most crime guns and to aid law enforcement investigations. Only 2% of gun dealers nationwide are subject to this program, which includes dealers who have sold at least 25 guns that were recovered in crime during the past year that were found to have taken less than three years to make it from point of sale to being recovered in that crime. The ATF had identified that this low “time-to-crime” is a strong indicator of gun trafficking. This report, and its underlying national data, are the clearest look we’ve had in two decades as to which gun dealers sell the most crime guns. Absent complete transparency into the gun industry’s role in supplying firearms that fuel our nation’s gun violence epidemic, this data is the best indicator we have as to which gun dealers are fueling crime.

Washington, DC: Brady Campaign, 2024. 20p

By Gergely Hideg

KEY FINDINGS: Between 2010 and the end of the 2014–15 phase of the Russo-Ukrainian war, lethal criminal violence in Ukraine increased by nearly 50 percent. This raises the possibility of an even steeper future increase in violent crime resulting from the current full-scale war.

In spite of the increasing crime victimization rate of households since the 2022 invasion, incidents involving firearms remain less common compared to the pre-invasion period. Nonetheless, trust in the police—while still high—has declined since winter 2022–23, and approximately 14 percent of Ukrainian civilians now carry some form of typically non-lethal weapon for self-defense, which is more than a twofold increase from 2019 and more than a threefold increase from 2011.

The full-scale Russian invasion of Ukraine initially led to a slight decrease in firearms kept in households as civilians and weapons were mobilized for the war effort. As of summer 2023, household ownership levels have gone back up, but the number of firearms held by these households has decreased by approximately 20 percent since the start of the full-scale war.

Survey respondents believe that the acquisition of firearms has become more straightforward than in winter 2022–23, although it still presents much greater challenges than in 2019. Acquiring ammunition appears to be more difficult than acquiring firearms.

Between 43 and 46 percent of men in every age group indicated that they either already own a firearm (7 percent overall) or would like to own one. Only 11 percent of women expressed the desire to own a firearm.

The survey indicated that more women than men expressed negative views about firearms: they have less desire to own a firearm, they are less likely to think they are necessary, and not many would feel safer if their household had a firearm. Nonetheless, many respondents, among them women, thought women ‘in their area’ expected their husbands to be able to use a firearm.

Geneva, SWIT: Small Arms Survey, 2023. 9p.