It was ineffective. That is, homicide didn't go down as was promised following the law's implementation.
...
Good guys have good effects with guns, bad guys have bad effects with guns.
Gary Kleck
June 29, 2009
Florida State University Criminology Professor
Some wonder if tighter gun control helps
[And I have yet to see a law passed, or even proposed, that didn't create more of a impediment to gun ownership on the good guys than it did the bad guys. Hence, my Just One Question.--Joe]