Bullet Gnomes Are Real

Rule 1.  The firearm is always loaded.
Rule 2.  Don't touch the trigger unless you intend to fire.
Rule 3.  Don't point the firearm at anything you don't intend to shoot, or care if it gets shot.
Rule 4.  Be sure of what's behind your target.  In case you miss or the round isn't stopped by the target.

How many of these rules were broken here at this dead link?

I've had a negligent discharge about a year and a half ago, I broke rules 1 and 2.  I would probably have been fine except you have to break rule 2 to disassemble a Glock.  Luckily, I had the gun pointed in a safe direction and the only casualty was the drywall in the bedroom.