But American gun store owners say it is unlikely gangs are getting many weapons from them.
Charles Wagnon, who owns Tex-Guns in Austin, Texas, says no one comes here to buy an arsenal.
"There is certainly not anybody here buying anything in any kind of quantity to pass them on," he said.
Wagnon says he cannot obtain or sell fully automatic rifles or grenade launchers like the ones being used by criminal gangs in Mexico.
It's 106 miles to Chicago, we got a full tank of gas, half a pack of cigarettes, it's dark, and we're wearing sunglasses
5 years 49 weeks ago, 6:21 PM