The Colt 9mm Submachine Gun, manufactured by Colt's Manufacturing Company, was introduced in the early 1980s. Designed for close-quarters combat, it quickly gained popularity among military, law enforcement personnel, and firearm enthusiasts. This compact and powerful firearm, chambered in 9x19mm Parabellum, offered a high rate of fire and maneuverability.

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Featuring a robust design, the Colt 9mm Submachine Gun utilizes a blowback-operated system and a closed-bolt design. With a cyclic rate of around 700-800 rounds per minute, it provided a formidable firepower advantage. Weighing approximately 6.5 pounds (2.9 kilograms), it struck a balance between portability and controllability. Identifying the firearm was relatively straightforward, with distinct Colt branding and model markings on the receiver. The overall aesthetics are very similar to most M16 type rifles. It typically came equipped with a detachable box magazine, with a standard capacity of 32 rounds.

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The Colt 9mm Submachine Gun saw action in various conflicts and operations worldwide. Its reliable performance and compact design made it well-suited for urban warfare and close-quarter combat situations. While primarily associated with modern conflicts, its lineage could be traced back to the Colt Commando family of firearms.