Updated Assessment of the Federal Assault Weapons Ban: Impacts on Gun Markets and Gun Violence, 1994-2003

An Updated Assessment of the Federal Assault Weapons Ban: Impacts on Gun Markets and Gun Violence, 1994-2003 Report to the National Institute of Justice, United States Department of Justice By Christopher S. Koper (Principal Investigator) With Daniel J. Woods and Jeffrey A. Roth June 2004 Jerry Lee Center of Criminology University of Pennsylvania 3814 Walnut Street Philadelphia, PA 19104 TABLE OF CONTENTS Preface i Acknowledgments ii 1. Impacts of the Federal Assault Weapons Ban, 1994-2003: Key Findings and Conclusions 1 2. Provisions of the Assault Weapons Ban 4 2.1. Assault Weapons 4 2.2. Large Capacity Magazines 6 2.3. Foreign Rifles Capable of Accepting Large Capacity Magazines for Military Rifles 8 2.4. Ban Exemptions 10 2.5. Summary 11 3. Criminal Use of Assault Weapons and Large Capacity Magazines Before the Ban 14 3.1. Criminal Use of Assault Weapons 15 3.2. Criminal Use of Large Capacity Magazines 18 3.3. Summary 19 4. Overview of Study Design, Hypotheses, and Prior Findings 20 4.1. Logical Framework for Research on the Ban 20 4.2. Hypothesized Market Effects 21 4.3. Prior Research on the Ban’s Effects 23 5. Market Indicators for Assault Weapons: Prices and Production 25 5.1. Price Trends for Assault Weapons and Other Firearms 25 5.2. Production Trends for Assault Weapons and Other Firearms 33 5.3. Summary and Interpretations 36 6. Criminal Use of Assault Weapons After the Ban 39 6.1. Measuring Criminal Use of Assault Weapons: A Methodological Note 39 6.2. National Analysis of Guns Reported By Police to the Federal Bureau of Alcohol, Tobacco, and Firearms 40 6.3. Local Analyses of Guns Recovered By Police 46 6.4. Summary 51 7. Market Indicators for Large Capacity Magazines: Prices and Importation 61 7.1. Price Trends for Large Capacity Magazines 61 7.2. Post-Ban Importation of Large Capacity Magazines 65 7.3. Summary and Interpretations 65 TABLE OF CONTENTS (CONTINUED) 8. Criminal Use of Large Capacity Magazines After the Ban 68 8.1. Baltimore 69 8.2. Anchorage 73 8.3. Milwaukee 75 8.4. Louisville 77 8.5. Summary 78 9. The Consequences of Crimes With Assault Weapons and Large Capacity Magazines 80 9.1. The Spread of Semiautomatic Weaponry and Trends in Lethal and Injurious Gun Violence Prior to the Ban 81 9.2. Shots Fired in Gun Attacks and the Effects of Weaponry on Attack Outcomes 83 9.3. Post-Ban Trends in Lethal and Injurious Gun Violence 91 9.4. Summary 96 10. Looking to the Future: Research Recommendations and Speculation About the Possible Consequences of Reauthorizing, Modifying, or Lifting the Assault Weapons Ban 98 10.1. Research Recommendations and Data Requirements 98 10.2. Potential Consequences of Reauthorizing, Modifying, or Lifting the Assault Weapons Ban 100 References 102 PREFACE Gun violence continues to be one of America’s most serious crime problems. In 2000, over 10,000 persons were murdered with firearms and almost 49,000 more were shot in the course of over 340,000 assaults and robberies with guns (see the Federal Bureau of Investigation’s annual Uniform Crime Reports and Simon et al., 2002). The total costs of gun violence in the United States – including medical, criminal justice, and other government and private costs – are on the order of at least $6 to $12 billion per year and, by more controversial estimates, could be as high as $80 billion per year (Cook and Ludwig, 2000). However, there has been good news in recent years. Police statistics and national victimization surveys show that since the early 1990s, gun crime has plummeted to some of the lowest levels in decades (see the Uniform Crime Reports and Rennison, 2001). Have gun controls contributed to this decline, and, if so, which ones? During the last decade, the federal government has undertaken a number of initiatives to suppress gun crime. These include, among others, the establishment of a national background check system for gun buyers (through the Brady Act), reforms of the licensing system for firearms dealers, a ban on juvenile handgun possession, and Project Safe Neighborhoods, a collaborative effort between U.S. Attorneys and local authorities to attack local gun crime problems and enhance punishment for gun offenders. Perhaps the most controversial of these federal initiatives was the ban on semiautomatic assault weapons and large capacity ammunition magazines enacted as Title XI, Subtitle A of the Violent Crime Control and Law Enforcement Act of 1994. This law prohibits a relatively small group of weapons considered by ban advocates to be particularly dangerous and attractive for criminal purposes. In this report, we investigate the ban’s impacts on gun crime through the late 1990s and beyond. This study updates a prior report on the short-term effects of the ban (1994-1996) that members of this research team prepared for the U.S. Department of Justice and the U.S. Congress (Roth and Koper, 1997; 1999). i ACKNOWLEDGMENTS This research was supported by National Institute of Justice (U.S. Department of Justice) grants 2003-IJ-CX-1029 to the University of Pennsylvania and 98-IJ-CX-0039 to the Urban Institute. The Jerry Lee Center of Criminology, University of Pennsylvania provided additional support. The views expressed are those of the author. They do not reflect official positions of the United States Department of Justice and should not be attributed to the trustees of the University of Pennsylvania, the Urban Institute, or any of the other persons or organizations listed below. The author wishes to thank several people and organizations that assisted this effort in numerous ways. Daniel Woods assisted with data analysis. Jeffrey Roth, who directed our first study of the assault weapons ban, provided advice and editorial input. Additional research assistance was provided by the following former employees of the Urban Institute: Gretchen Moore, David Huffer, Erica Dinger, Darin Reedy, Kate Bunting, Katie Gorie, and Michele Waul. The following persons and organizations provided databases, information, or other resources utilized for this report: Glenn Pierce (Northeastern University), Pamela Shaw and Edward Koch (Baltimore Police Department), Robert Shem (Alaska State Police), Bill McGill and Mallory O’Brien (currently or formerly of the Firearm Injury Center, Medical College of Wisconsin), Rick Ruddell (California State University, Chico), Scott Doyle (Kentucky State Police), Terrence Austin and Joe Vince (currently or formerly of the Bureau of Alcohol, Tobacco, Firearms, and Explosives), Carlos Alvarez and Alan Lynn (Metro-Dade Police Department), Charles Branas (Firearm and Injury Center, University of Pennsylvania), Caroline Harlow (Bureau of Justice Statistics), and Rebecca Knox (Brady Center to Prevent Handgun Violence). Robert Burrows (Bureau of Alcohol, Tobacco, Firearms, and Explosives) and Wain Roberts (Wain Roberts Firearms) shared technical expertise on firearms. Anonymous reviewers for the National Institute of Justice provided thorough and helpful comments on earlier versions of this report, as did Terrence Austin and Robert Burrows of the Bureau of Alcohol, Tobacco, Firearms, and Explosives. Finally, I thank Lois Mock, our National Institute of Justice grant monitor, for her advice and encouragement throughout all of the research that my colleagues and I have conducted on the assault weapons ban. ii 1. IMPACTS OF THE FEDERAL ASSAULT WEAPONS BAN, 1994-2003: KEY FINDINGS AND CONCLUSIONS This overview presents key findings and conclusions from a study sponsored by the National Institute of Justice to investigate the effects of the federal assault weapons ban. This study updates prior reports to the National Institute of Justice and the U.S. Congress on the assault weapons legislation. The Ban Attempts to Limit the Use of Guns with Military Style Features and Large Ammunition Capacities • Title XI, Subtitle A of the Violent Crime Control and Law Enforcement Act of 1994 imposed a 10-year ban on the “manufacture, transfer, and possession” of certain semiautomatic firearms designated as assault weapons (AWs). The ban is directed at semiautomatic firearms having features that appear useful in military and criminal applications but unnecessary in shooting sports or self-defense (examples include flash hiders, folding rifle stocks, and threaded barrels for attaching silencers). The law bans 18 models and variations by name, as well as revolving cylinder shotguns. It also has a “features test” provision banning other semiautomatics having two or more military-style features. In sum, the Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF) has identified 118 models and variations that are prohibited by the law. A number of the banned guns are foreign semiautomatic rifles that have been banned from importation into the U.S. since 1989. • The ban also prohibits most ammunition feeding devices holding more than 10 rounds of ammunition (referred to as large capacity magazines, or LCMs). An LCM is arguably the most functionally important feature of most AWs, many of which have magazines holding 30 or more rounds. The LCM ban’s reach is broader than that of the AW ban because many non-banned semiautomatics accept LCMs. Approximately 18% of civilian-owned firearms and 21% of civilian-owned handguns were equipped with LCMs as of 1994. • The ban exempts AWs and LCMs manufactured before September 13, 1994. At that time, there were upwards of 1.5 million privately owned AWs in the U.S. and nearly 25 million guns equipped with LCMs. Gun industry sources estimated that there were 25 million pre-ban LCMs available in the U.S. as of 1995. An additional 4.7 million pre-ban LCMs were imported into the country from 1995 through 2000, with the largest number in 1999. • Arguably, the AW-LCM ban is intended to reduce gunshot victimizations by limiting the national stock of semiautomatic firearms with large ammunition capacities – which enable shooters to discharge many shots rapidly – and other features conducive to criminal uses.

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