Prensa Latina reports:

A SEDENA pamphlet handed over to several entities explains what type of guns they can use to fight organized crime, the way to acquire them and the way to request them, even abroad.

The newly allowed guns include calibre-40 and fragmentation grenades.

The SEDENA document also explains the type of training and confidence control tests to be undergone by those using the guns.

I presume .40 means .40 S&W. Personally, unless I had a multi-shot 40mm grenade launcher as my sidearms and something big enough to read-out-and-touch-someone from a significant distance as my primary arm I don’t think I would even remotely consider Mexican police work … and even then 😉