Mexico's gun laws are quite restrictive, and extremely harsh if you run afoul of them.
Unlike Canada, where you're likely to be turned away at the border if you have unauthorized firearms or ammo, unwary visitors to Mexico have languished in Mexican jails for five years due to a single spent casing in their vehicle.
It is true that Mexico's constitution has a Right to Keep and Bear Arms for its citizens. However, it is quite a bit more restrictive than the USA's Second Amendment:
** Short Answer - NO**
· 10 years ago