Magpul FMG-9

The Magpul FMG-9 is a prototype for a new generation of folding submachine guns, designed by Magpul Industries in 2008. Like other folding machine guns, it would be used for concealed carry and can be disguised as anything from a small package to an extra laptop battery. It is made out of a light-weight polymer material rather than metal, making it very light and easy to carry. It is also small enough even to fit in the back pocket of most everyday pants. It was developed for potential use by personal protection details such as the United States Secret Service. It is still a prototype and may or may not be made in large numbers for law enforcement agencies. The prototype uses a semi-automatic firing mechanism from a 9mm Glock 17 pistol. With modification, the FMG-9 could also use the mechanism of a Glock 18 machine pistol for Class 3 or law enforcement use.

Similar weapons

 * Ares FMG – a 9mm Parabellum folding submachine gun designed by Francis Warin at Eugene Stoner's company in the mid-1980s.
 * UC-M21 – a 9mm Parabellum folding submachine gun designed by Dave Boatman in the late 1980s, it was used in the film Robocop 2.
 * PP-90 – Russian 9mm Makarov folding submachine gun by KBP (1990s).
 * Goblin – a Ukrainian prototype based on PP-90.

Airsoft
In 2010, Magpul Industries' PTS (Professional Training and Simulation) Division in cooperation with KWA Performance Industries released the FPG (Folding Pocket Gun). The FPG is almost identical to the FMG-9 prototype, but contains the firing mechanism of an airsoft KWA M18c replica. The FPG fires 6mm pellets with a magazine capacity of 48.