
The weapon has an ambidextrous fire mode selector located over the pistol grip, with settings for “safe,” “semi-auto,” and “full-auto.” There are also semi-automatic only versions of the weapon.

However, versions of the weapon with different barrel lengths are available. The SIG MPX has a baseline 165 mm (6.5″) barrel. The system reduces recoil, increases accuracy and reliability, and ensures that dirt and water do not enter the chamber, causing stoppages. The piston system was developed for the SIG MCX assault rifle and is typically associated with assault rifles. The weapon is a scaled-down version of the SIG MCX assault rifle and is the first submachine gun with a fully closed and rotating bolt piston system. Heckler & Koch MP5 submachine gun with silencer attached (Photo: WikiGuns) However, the MP5 has earned a reputation for its exceptional accuracy and reliability, making it a preferred choice among law enforcement and special forces personnel for several decades. It is also shorter and lighter than the MP5, enabling easier maneuverability in confined spaces. The SIG MPX boasts a modern design with a modular structure that allows for effortless customization.

Nonetheless, there are notable differences between the two. Its dimensions and weight resemble the popular Heckler & Koch MP5 submachine gun. The SIG MPX is a submachine gun designed with a gas-operated and selective fire system chambered for standard 9×19 mm Parabellum ammunition.
