3,695 unintentional gun deaths between 2010-2016 in the US. So roughly 670 per year. Wouldn't say negligible.
Ok, now how many of those people who accidentally discharged their weapon were sufficiently trained in how to handle their weapon? Further, how many of them were responsible people going about their daily routine?

Some redneck shooting his daughter instead of a tornado doesn't compare to a trained teacher taking some kid's head off by accident.