Sean you forgot to mention the 6000+ firearms lost by SAPS and we have little data on what the SANDF lost. And the illegal AK's crossing the border daily. And you have an issue with legal firearm owners.
Do you still need an argument? Try "Every illegal firearm began its life as a legal firearm." Not true the rusty trusty AK did not start off as a legal firearm.
"Only in a society where EVERY gun is an illegal gun, does the problem begin to dissolve." Laughable! So now we have 1000's of illegals and the problem goes away! Like drugs illegal in most countries. And killing someone is illegal according to some laws - with a hammer, spade, kitchen knife, panga etc etc.
You offer very little as far as practical working solutions - except for labeling all SAPS members with derogatory names.