Right to Possess Firearms
In Mexico, the right to private gun ownership is guaranteed by law
Prohibited Firearms and Ammunition
In Mexico, civilians are not allowed to possess military grade firearms intended for Army, Navy and Air Force use, including: .357 Magnum revolvers and those greater than .38 calibre, handguns greater than 9mm, rifles and carbines of .223, 7mm, 7.62 and .30 calibres, automatic firearms, or shotguns with barrels shorter than 635mm or greater than 12 gauge
http://www.gunpolicy.org/firearms/region/mexico
>>>Right to Possess Firearms
In Mexico, the right to private gun ownership is guaranteed by law
Prohibited Firearms and Ammunition
In Mexico, civilians are not allowed to possess military grade firearms intended for Army, Navy and Air Force use, including: .357 Magnum revolvers and those greater than .38 calibre, handguns greater than 9mm, rifles and carbines of .223, 7mm, 7.62 and .30 calibres, automatic firearms, or shotguns with barrels shorter than 635mm or greater than 12 gauge<<<
So, 5.45 AK and 9mm semi-auto pistols are legal?