Anything mechanical can "malfunction," big reasons why the Big Four safety rules. However, due to liability issues, most firearms are "over-designed" so as not to discharge when dropped, etc.
Even the "unloaded gun" has killed. I suspect that it was the fault of the owner, not the firearm.
Caryy the thing loaded in the chamber, finger always off the trigger/safety on until ready to fire, watch yer step .... & that muzzle.