Even in China, where the people have no rights and their is no limit to how hard the government can press boots to your neck, gun control is still proving to be a failure.
If it fails in totalitarian Communist regimes where the government can do with you as they please (including execution for "gun crimes") how can anyone expect it to succeed in America where there are limitations on government power.
The only way gun control has ever "succeeded" is in making it easier for governments to control and slaughter people. China is proof of that truth.
H/T to Sebastian