- In the 13 states with the fewest restrictions on gun ownership, 40 percent of inmates illegally obtained the gun they used, Webster said. Only about 13 percent purchased the gun from a store or pawn shop. In the other 37 states, including New York state, 60 percent of inmates illegally procured the gun they used, Webster said. https://www.politifact.com/new-york/statements/2018/mar/12/john-faso/do-illegal-gun-owners-commit-most-gun-crime-rep-fa/
- Vincent James says "90% of guns come from illegal sources" as per his source that's not necessarily true https://www.bjs.gov/content/pub/pdf/suficspi16.pdf says "Among prisoners who possessed a gun during their offense, 90% did not obtain it from a retail source." Actual number as per his own report is 43.2%.
- Nearly 60 percent of guns recovered in Chicago come from out-of-state dealers, with more than 20 percent traced back to Indiana, according to a newly released report on the city’s violence. https://www.nbcchicago.com/blogs/ward-room/chicago-gun-trace-report-2017-454016983.html
- More people do die in states with less restrictions https://www.theatlantic.com/politics/archive/2015/08/the-states-with-the-most-gun-laws-see-the-fewest-gun-related-deaths/448044/

Do guns work for self defense?

-Conclusion: Access to firearms is associated with risk for completed suicide and being the victim of homicide. https://annals.org/aim/fullarticle/1814426/accessibility-firearms-risk-suicide-homicide-victimization-among-household-members-systematic

-"On average, guns did not protect those who possessed them from being shot in an assault. Although successful defensive gun uses occur each year, the probability of success may be low for civilian gun users in urban areas. Such users should reconsider their possession of guns or, at least, understand that regular possession necessitates careful safety countermeasures." https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2759797/

-The best available evidence using different statistical approaches—panel data regression and synthetic control—with varying strengths and shortcomings and with different model specifications all suggest that the net effect of state adoption of RTC laws is a substantial increase in violentcrime. (13-15% higher violent crime) https://www.nber.org/papers/w23510.pdf

-"Of over 14,000 incidents in which the victim was present, 127 (0.9%) involved a SDGU. SDGU was more common among males, in rural areas, away from home, against male offenders and against offenders with a gun. After any protective action, 4.2% of victims were injured; after SDGU, 4.1% of victims were injured. In property crimes, 55.9% of victims who took protective action lost property, 38.5 of SDGU victims lost property, and 34.9% of victims who used a weapon other than a gun lost property." https://www.sciencedirect.com/science/article/pii/S0091743515001188

-"CONCLUSIONS: Changes in the types of firearms in the homes of US families may partially explain recently rising firearm-related mortality among young white children. These findings hold relevance for pediatricians and policy makers aiming to reduce firearm-related mortality and promote firearm safety in children’s homes." http://pediatrics.aappublications.org/content/143/2/e20181171

-"States with Strict Gun Laws See Increase in Homicides When They Border States with Lax Ones
Over a five-year period, most guns found in states with strict gun laws were obtained from less restrictive states"
https://www.pennmedicine.org/news/news-releases/2019/march/states-with-strict-gun-laws-see-increase-in-homicides-when-they-border-states-with-lax-ones