This is the link to the published paper. just click on the image.
The replication walkthrough is back up and running (2020-04-23). It does not look very pretty, but it works. You can navigate it at the top menu, click on "The social costs of gun ownership"
Send me an email.
Unfortunately my old website broke (new php version). It will take me some time to put the walkthrough back up. Until then I will help you out personally.
Alternatively, there is my working paper.
All data sources are listed in the references. You will still need my code to extract and combine the data. I will mail you my code upon request. I will even walk you through running my code via Skype or Webex or phone (without charge — even if you are an anti gunner). Just contact me.