@
Jexla, the childish comment wasn't aimed at you or anybody else in particular, I actually think your style of post has somewhat improved lately but with a few still being unnecessarily obtuse, but I guess that's just your style.
The problem with your idea is that it doesn't discourage a FAL holder from buying legally and selling to unlicenced people, which would be one of the main goals of a database.
Decent firearms are actually worth more on the black market, paticulary amongst gangs who have huge amounts of cash available, pistols are 5-10k+. But yes if you're outside those circles it would be hard to get that kind of money for them.
As for your final question @
timattalon I'm not sure anyone could answer that with any kind of certainty.