They are about correct on the percentage . The guns did not come from shows or dealers though. 80%+ came from our Goverment Aid to their Goverment to use for law enforcement and Army. The fucking Mexicans can't or won't keep track of these full-auto weapons of Goverment forces and they walk them right to the cartels. After all if the cartels were not so well armed how would they justify the millions in aid (pocket money for politicos)? In the barrios of brazil, gangs have always said that their weapons are from crooked law officers. Full-auto Colt Ars that only get imported to goverment troops. Arming both sides forments the forever war of population dominance .