According to the ATF, about 99% of FFL dealers operate properly and only a tiny percentage of legally sold guns are ever used in crimes with a time-to-crime average of over ten years. FFL dealers selling a gun later found at a crime scene within three years of the first sale raise suspicions about that dealer. For a time, the D.C. area’s Metropolitan Police Department was the only legal FFL gun dealer in the nation’s capital. For the dozens of guns recovered at crime scenes that D.C. MPD FFL transferred, the time-to-crime was 20 months or less – less than two years.