The Pistolet Mitrailleur MAS modèle 38 (MAS Model 38 Submachine Gun) was developed from the experimental MAS-35, itself derived from the STA 1922 and the MAS 1924 both in 9 mm produced immediately after World War I. Prior to the development of this weapon France used a variety of German and Swiss submachine guns.

MAS, the Manufacture d'Armes de Saint-Étienne (Weapons industry of Saint-Étienne), was a French supplier of arms that manufactured several firearms for the French military, including the MAS-36 rifle, the MAS-49 rifle, and the FAMAS.
It is now part of Nexter.
The French Ministry of War said it had no need for a submachine gun and mass-production did not begin until 1939.

The German army seized the MAS plant in 1940 just as the MAS-38 was entering large-scale production.
The Germans accepted the gun as a substitute standard weapon, naming it the 7.65 mm MP722(f).
They continued production of the gun for their own armed forces and supplied some to the Vichy French.

On April 28, 1945, one was used by Italian partisans to shoot the former Fascist dictator Benito Mussolini.

Production ended in 1949.
By that time 1,958 were manufactured before German occupation, and further production is unknown.
The French police continued to use the MAS-38 after World War II until it was replaced in the 1950s by the MAT-49 submachine gun.
The Pistolet Mitrailleur MAS modèle 38 (MAS Model 38 Submachine Gun) was developed from the experimental MAS-35, itself derived from the STA 1922 and the MAS 1924 both in 9 mm produced immediately after World War I. Prior to the development of this weapon France used a variety of German and Swiss submachine guns.
MAS, the Manufacture d'Armes de Saint-Étienne (Weapons industry of Saint-Étienne), was a French supplier of arms that manufactured several firearms for the French military, including the MAS-36 rifle, the MAS-49 rifle, and the FAMAS. It is now part of Nexter. The French Ministry of War said it had no need for a submachine gun and mass-production did not begin until 1939.
The German army seized the MAS plant in 1940 just as the MAS-38 was entering large-scale production. The Germans accepted the gun as a substitute standard weapon, naming it the 7.65 mm MP722(f). They continued production of the gun for their own armed forces and supplied some to the Vichy French.
On April 28, 1945, one was used by Italian partisans to shoot the former Fascist dictator Benito Mussolini.
Production ended in 1949. By that time 1,958 were manufactured before German occupation, and further production is unknown. The French police continued to use the MAS-38 after World War II until it was replaced in the 1950s by the MAT-49 submachine gun.
MAS-38