In the 1930s, many Latin American countries ordered vz. 12/33 carbines. Mexico and Colombia ordered some in 7×57mm Mauser. After 1945, some of the Colombian carbines may have been modified to fire .30-06 Springfield. Ecuador ordered vz. 12/33s in 7.65×53mm Mauser and used them during the 1941 war against Peru. Salvador bought 5,6000 carbines in 1937 and used them until they were replaced post-WW2 by American weapons. Nicaragua bought some vz. 12/33 carbines (mostly with Spanish markings but some with Czech markings) alongside vz. 23 short rifles. Paraguay also fielded some vz. 12/33 during the Chaco War.