Name That Gun: Hecho En Mexico Edition

Trejo, c Nick Leghorn

This handgun was manufactured in Mexico, exploiting a loophole in Mexican law regarding the manufacture of certain types of rimfire handguns, before being imported into the United States. Kind of a switch from that whole Fast and Furious thing. For full credit, name (1) the manufacturer, (2) the type of handgun, and (3) what loophole they were exploiting.