http://www.gunfacts.info/pdfs/gun-facts/6.1/gun_facts_6_1_screen.pdf
That’s quite an impressive document.
Looking across the developed world it seems that CULTURE is a big determinant (i.e., drinking in Scotland, suicide in Japan, conscription in Switzerland, etc.), NOT GUNS.
Let’s think, shall we - what does the US have in great abundance (culturally speaking) that other countries don’t?