The number of accidental deaths involving firearms is at its lowest level since 1903. There is another important point to make in this regard. Firearm manufacturers have stated for a long time that, if a firearm dealer knowingly sells a gun to a criminal or to someone for criminal use, they should be prosecuted. We do not want our products to go into criminal hands. What you do not hear is that the firearms industry is one of the chief sources of information to the law enforcement community about criminal attempts to obtain guns.
Dealers work with police on a daily basis on such issues.
They cannot sell a gun unless the person buying it passes a background check. They cannot sell a gun to one person if they know the gun is actually intended for someone who cannot lawful possess it. If they violate these rules, they should go to jail. Firearm manufacturers help the police by tracing guns found at crime scenes. It knows that the police are already on the job.