The design of this weapon in fact suggests a rifle... but not! It is a gun! The USA does voulerent not this weapon, considered too fragile, but to fill the lack of Thomson M1A1, in commenderent in 1942. A year after these weapons were removed from the army because they were unreliable, hard to use and impractical. There were only 100,000 copies of this weapon which is not much. Para a version with folding butt, the M55 was created, but it suffered the same defects as the M50 and was also abandoned.

Technical specifications:

Type	Submachine gun
Operation	Automatic
Arms and/or ammunition	.45 (11.43 mm)
Rate of fire	550 rounds per minute
Charger	12/20 balls
Precision	Bad
Scope	150 meters
Mass	3.05 Kg
Length	880 mm / canon: 279 mm
Initial speed	280 m/s