How do you qualify safety? You're suggesting that larding a gun up with crap will make it safer, I disagree- the ultimate assurance of safety is in the
hands of the person carrying the gun more than anything else. Many years ago when I was younger and dumber, and had more time to waste, I did research on this- eg, the intrinsic safety of handguns- and what I found was that, generally speaking, this notional of handguns being intrinsically unsafe is pretty dumb overall- I could only ever find a handful of incidents where someone got hurt as the result of a real defect in the intrinsic design of the firearm in question. Most of the incidents I found either involved really old crap or junkers that nobody buys anyways. (eg, jennings, lorcin, etc... ) Hell, a lot of gun stores even in free states don't even sell those kinds of guns because of customer complaints and liability. The issue is pretty moot, as far as I'm concerned. By suggesting "they're ought to be a law" you're basically flogging a dead horse.
ND's caused by firearm defects are a tiny fraction of all firearms discharge "accidents"- the overwhelming majority is simple human negligence/error- the disparity is so huge that any injuries caused by a defect get lost in the noise. The stat you're looking for is similar to the amount of deaths caused by
someone not having the right kind of muffler attached to their car, or something similarly inane.
The likelihood of that actually happening is in the "slim to none" category, especially given that nearly all modern handguns have some form of drop safety already in them. There really is no need to "mandate" it, because the industry has already decided that for guns people are likely to carry, that it's generally a good idea. No need for the government to FORCE them to do it- as it's basically already been done.
-Mike