Answer Summary
Independent analyses of Bureau of Justice Statistics (BJS) surveys and other data consistently indicate that a very large majority of guns used in crimes in the United States are obtained through illegal or questionable channels. Across multiple nationally representative studies, roughly 9 out of 10 offenders report acquiring their firearm through methods that bypass legal sale or transfer requirements, most commonly through illegal markets, theft, or loans from friends or family that do not involve a licensed seller. The broad consensus among researchers is that a small share of guns used in crimes move through licensed dealers without background checks, but most are sourced in ways that existing prohibitions already address. Below we break down definitions, sources, acquisition pathways, and what these findings imply for prevention strategies.
What the Statistic Measures
The statement refers to the share of guns recovered from crimes—such as homicides, robberies, and assaults—that were not acquired through a standard legal sale or transfer involving a licensed dealer and a background check. In practice, this includes guns obtained through:
- Theft or loss, where the legal owner did not authorize the transfer.
- Purchases or transfers from unlicensed sellers who are not required to conduct background checks.
- Borrowing or sharing among individuals, including straw purchases where a prohibited person uses another’s name.
- Black-market or street markets, where documentation is often falsified or absent.
Because many crimes involve firearms that are not recovered or entered into tracing systems, the source is typically inferred from offender self-reports in large surveys, which are used alongside trace data to form estimates.
Key Sources and Data
The most frequently cited source for this statistic is the Bureau of Justice Statistics’ National Crime Victimization Survey (NCVS) and related offender surveys, which ask individuals arrested for crimes how they obtained their weapon. These surveys consistently show that a majority of offenders report acquiring firearms outside legal channels. Researchers also draw on firearm trace data from the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF), state-level reporting programs, and academic analyses to contextualize self-reported acquisition patterns. Importantly, estimates can vary because:
- Methodological choices, such as whether only recovered guns or all guns used are included.
- Time periods and geographic coverage of the underlying surveys or traces.
- How categories like straw purchases or loans from unlicensed sellers are classified.
Common Acquisition Pathways for Crime Guns
Offenders most often describe obtaining guns through channels that do not involve a licensed sale with a background check. While some transactions may involve legal sellers who fail to follow the law, empirical studies emphasize these scenarios:
- Theft- and loss-derived guns, which re-enter circulation via theft diversion or underground sales.
- Purchases from unlicensed sellers at private sales, gun shows, or online platforms without background checks.
- Family or friend transfers, including informal loans and straw purchases where a legally eligible person acquires a gun for someone who is prohibited.
- Black-market sources, where documentation is minimal or forged.
Because many legally purchased guns are also trafficked or diverted from lawful owners into criminal markets, estimated shares of illegal sourcing can rise when these secondary flows are included.
Supporting Data Snapshot
The table below summarizes prominent, publicly available estimates that describe how guns used in crimes were acquired in the United States. Values are drawn from large offender surveys, law enforcement reports, and trace records where stated.
| Source / Period | Share of Crime Guns from Illegal or Questionable Sources | Primary Acquisition Pathways | Notes |
|---|---|---|---|
| BJS National Crime Victimization Survey offender reports (multiple years) | Approximately 85–95% | Theft, unlicensed sellers, straw purchases, informal loans | Reflects self-reported methods; varies slightly by year and definition |
| ATF firearm trace data (selected cities, multiyear averages) | High proportion with no or questionable sale documentation | Illegal markets, theft and resale, straw purchases | Traces cover recovered guns; not all crimes yield recoverable firearms |
| Federal and state program reporting (e.g., NIBIN, state trace partnerships) | Majority linked to non-licensed or suspect transfers | Diversion from legal commerce, straw purchases, theft | Programs focus on recovered crime guns and trafficking patterns |
Methodological Considerations
Estimates rely on different data sources and definitions, which can shift the precise percentage. Surveys like the NCVS provide self-reported acquisition methods but depend on honest and accurate recall from offenders. Trace data show which guns lack clear legal sale records but cannot directly prove how a prohibited person obtained the firearm. Combining surveys with traces and law enforcement intelligence helps triangulate a consistent picture. Researchers generally agree that a majority of crime guns are first acquired through channels that either already violate existing law or exploit enforcement gaps, rather than through a single legal sale followed by immediate illegal transfer.
Implications for Policy and Practice
Understanding how guns are obtained informs prevention strategies. Approaches that show consistent promise include:
- Strengthening background checks to cover private sales and transfers where feasible under state law.
- Reducing theft diversion through secure storage promotion and penalties for negligent storage.
- Targeting straw purchasing networks with coordinated enforcement and penalties.
- Improving data integration between trace systems, offender surveys, and policing to identify hotspots and trafficking patterns.
Because many crime guns circulate in informal markets, interventions that combine enforcement with community-based outreach and de-escalation strategies can reduce the overall availability of firearms used in crimes.
Conclusion
The widely cited figure that about 93% of guns used in crimes are obtained illegally is consistent with multiple national surveys and trace analyses. Most crime guns are first acquired through theft, unregulated sales, informal loans, or straw purchases—channels that existing prohibitions are designed to address but often struggle to prevent effectively. While methodological variation means precise estimates will always differ, the consensus remains clear: a substantial majority of firearms used in crimes move through sources that bypass legal sale and background check requirements. Continued attention to legal compliance, trafficking patterns, and secure storage is central to reducing the availability of guns in criminal contexts.