Unfortunately for Mendoza, the war ended by September of 1945, bringing an end to the hope that the American military would be requiring large scores of automatic weapons. Mendoza then tried unsuccessfully to market the weapon to the Mexican Army who were still utilizing his 1934 and 1945 creations in number. In 1947, some 50 prototypes were sent to the Mexican Marines for evaluation but this endeavor came to naught. To make matters worse, strict Mexican export laws concerning weapons negated their sale overseas, essentially bringing an end to the Mendoza line of machine guns. Some RM-2 examples fell into museum hands while the lineage more or less fell to history.
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