Specification	Value
Full text name	Halcon ML-63
Caliber cartridge	9mm Luger - 9x19 Luger / Parabellum
Action type	manual
Trigger type	sa
Overall length, mm	690
Length, folded, mm	500
Barrel length, mm	170
Weight empty, kg	3.6
Magazine capacity, rounds	20, 42
Cyclic rate of fire, rounds/min	600

Halcon ML-63 submachine gun (Pistola ametralladora Halcón, Modelo Liviano 1963) was developed in 1963 by Argentinean arms-making company Fabrica de Armas Halcon. This weapon saw extensive use by Argentinean armed forces during conflict with Great Britain over Falkland islands. It was also used by Argentinean police until early 1990s.

Halcon ML-63 submachine gun is a simple blowback weapon that fires from closed bolt.It has a sliding “hammer’ or striker, which is cocked when bolt closes, and is released when trigger is pressed. It has dual trigger setup, which allows to fire either single shots (front trigger) or full automatic (rear trigger). Charging handle is located on the right side and moves along with the bolt. Weapon is manufactured mostly from steel stampings, and fitted with plain barrel that has a massive muzzle compensator. Magazine housing is extended to provide comfortable forward grip for non-firing hand. Halcon ML-63 submachine gun was usually equipped with simple telescoping buttstock, made of steel wire, although it can be replaced with detachable fixed wooden butt. Standard iron sights feature L-shaped flip-up rear sight with settings for 50 and 100 meters range.