Halcón ML-57

The ML-57 is a submachine gun manufactured by the Buenos Aires based Halcon corporation.

Overview
As good as the M-1943 submachine guns were, the ML-57 was requested as it was a lighter/cheaper alternative as FN FAL rifles fulfilled this role in Argentine service. The weapon is chambered in 9mm Parabellum for the Argentine Army and in .45 ACP for Police Forces, fed from 30 round magazines.

ML-60
A later variant of the ML-57 was the ML-60 which housed a two trigger group which enabled select fire capabilities.