Note also that an average of one such accident per year
One? Are you joking? According to CDC’s WISQARS, there are about 14,000-19,000 nonfatal injuries stemming from accidental shootings per year in the U.S. That's in addition to ~500-600 unintentional deaths per year. Gun "enthusiasts" like to cite statistics on gun deaths since the rise of conceal/carry (which truly have a lot more to do with better trauma medicine), but they never want to talk about the number of shootings. If you really want to understand the extent of the damage of America's gun fetish, count the number of people who get hit by bullets.
http://webappa.cdc.gov/sasweb/...
Of these about 20% are under the age of 25 and 10% under the age of 12.
Where do you get "an average of one such accident per year" unless you are focused strictly on injuries to your penis? Although I guess there is some evidence that gun owners have issues in that regard.
But yours is a common mistake people make when talking about guns, because they just don't know (or care) about the actual numbers. Much of the misdirected focus comes from the faulty research of the only "gun expert" that ever seems to appear in the media, the dishonest gun industry lobbyist and "researcher", John Lott whose book, "More Guns Less Crime" has been completely debunked.
[Full disclosure: I have been a gun owner for more than 4 decades. I've qualified 3 times as an expert marksman and twice as a sharpshooter, which is the second highest marksmanship designation (not counting the pro-marksman, etc. I support legal gun ownership and very strict gun control laws.]