All guns are both safe and unsafe, it's the idiot holding it that makes it that makes the difference; in other words, guns are safe, just not idiot proof. You would have to search long and far to find an industry more regulated for safety issues than the firearm industry.
"a microscopic array of characters that identify the make, model and serial number of the pistol"
Doesn't the barrel already provide all the ballistics proof of the firearm? Who cares about the cartridge, it is not doing the killing.
Also, I would contend that "Gun Safe Zones" are more dangerous that the guns themselves. I wish all the lawmakers who believe in gun control would be required to post large signs outside of their houses that state..."This house is a GUN FREE ZONE"
I am sure they would see all this gun control nonsense in a different light then.