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. 2018 Mar 5;178(5):692–700. doi: 10.1001/jamainternmed.2018.0190

Table 1. Firearm Control Laws Included in the State Firearm Policy Scale.

Law Descriptiona Scoring
Dealer regulation15,16 Laws regulating record keeping, security practices, and licensing for firearms dealers 1 point: Ban residential dealers, require security measures, or require reporting of sales, losses and thefts to law enforcement
2 points: Require dealer license
Background checks for private sales24,25 Laws requiring background checks for firearms sales made by individuals who are not federally licensed dealers 1 point: select firearms or only required at gun shows
2 points: required for all private sales
License to purchase or own17,22 Laws that require an individual to obtain a license prior to purchasing or owning a firearm 1 point: Require license for select firearms only, require safety training or testing, limit duration of license to ≤1 y
2 points: Require license for purchase or possession of all firearms
Junk gun regulation18 Laws that require firearms to meet design and manufacturing standards 1 point: Allow sale of only a list of approved guns
2 points: Require specific design and safety standards
Reporting requirement for lost or stolen guns24 Laws that require individuals to report the loss or theft of their firearms within a specified period of time 2 points: Require reporting of lost or stolen firearms
Multiple purchases31 Laws that restrict the number of firearms an individual can purchase within a given timeframe 2 points: restrict multiple purchases or sales
a

The Law Center to Prevent Gun Violence (LCPGV) provided detailed data describing firearm laws for every state for 2010. Based on the LCPGV methodology, we rated each state 0 to 2 in each of 6 areas, with stronger policies receiving 2 points and more lenient regulations receiving 1 point. These scores were summed to a cumulative measure, with possible values of 0 to 12.