|Place of origin||Argentina|
|Manufacturer||Buenos Aires Halcon|
|Barrel length||292 mm|
|Rate of fire||700 RPM|
|Effective firing range||200 m|
|Feed system||40 round box magazine|
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.
A later variant of the ML-57 was the ML-60 which housed a two trigger group which enabled select fire capabilities.
- Walter Harold Black Smith, Joseph Edward Smith (1973). Small arms of the world: a basic manual of small arms. Stackpole Books. p. 196-197.
- Edoardo Mori - Historical Atlas of guns.
- Jonas de Carvalho - Photos - Museo de armas de la Nación (Buenos Aires), 2011. Flickr.com.
- Jonas de Carvalho - Museo de armas de la Nación (Buenos Aires), 2011 Halcon ML-57. Flickr.com.
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