There are reports of 150000 Mexican soldiers deserting in the last year and taking their weapons with them. The 90% number that gets thrown around is BS. 90% of the weapons the Mexican govt returned to the ATF were manufactured in the US. I mean if your a billion dollar cartel king who needs to arm your thugs are you really going to go through trying to squeeze maybe a dozen at a time through the US border or import from Chinese/Russian manufactures who are cheap and have less red tape. Hell with FARC in Colombia just to the south why go outside Latin America at all.