One in ten develop a mental disorder at sometime in their lifetime. It helps police if they can look at their computor and see if the individual has guns. Especially before entering the house.

Issuing threats for example can bring a confiscation order down in Canada. I do not believe there was any reduction in violence when we in Canada had a gun registration law.

In fact with the growth of the drug industry out there. Probably more events occured. If there is a registration fee consider it more of a tax as we did during the years it was in force. Stiff penalties went along with not securing the guns properly and are still in effect.

If a registered gun is used in a crime they will make the real owner of the gun somewhat liable. The point in general remains that in general it will not slow down violent acts with guns.