Dr.,
What is the current murder rate in London?
Londoners may not be as afraid of getting shot, but in reality, they're in more danger in London than in NYC.
Why is a murder committed with a gun worse than other murders?
You have this fixation on guns as the root of the problem. For you, for some reason, a person shot to death is a bigger tragedy than someone beaten to death with a cricket bat. The people on this board see it differently. For us, someone beaten to death with a cricket bat is a tremendous tragedy, because they were likely denied the most effective means (by law, or by themselves) of self-defense.
Why will reducing murders implemented with guns reduce the overall murder rate?
You also seem to believe that by eliminating guns you have eliminated all of the murders implemented with guns, when there are numerous substitutes; Knives, archery gear, bats and clubs of all sorts, cars, poison, explosives, frying pans, and so on. Substitution isn't imaginary: its a fact of economics.
So let's back up.
Why do people commit murder? I suspect that your gun blinders have prevented you from asking this question. Please understand that we have dozens of people on this board that study this question for a living. Would you care to be enlightened? This may be a good place to start:
Instrumental vs. Expressive Violence
Why would any sort of law have a preventative affect on a criminal?
Why do you insist that the way to decrease predation is to make the prey weaker?
You want to decrease violent crime? Here's my solution: Make murder illegal.
You've basically refused to answer how it is that registration, cosmetic bans, ballistic fingerprinting, and all of your other bullet points do a darn thing to prevent crime. In fact, I believe those things will increase "gun crime" for the simple reason that by creating new crimes, you've created new criminals.
I believe your desire to reduce murder rates is honorable and sincere. The issue that most of us here have with your proposals is that you can't explain why they will actually reduce crime. Your response is basically "We HAVE to do SOMETHING!!!" I fail to see how doing something with no evidence or reason, logical, historical or statistical, of working is worth considering in the slightest.
If you had irrefutable proof that cutting off everyone's left pinky would result in Peace on Earth, I'd cut mine off. Right after everyone else. Until that time I have a responsibility to myself, my family, my friends and my nation to be able to defend myself and them.
At the moment, cutting off everyone's left pinky finger seems like a more reasonable solution to violent crime than your trite proposals.