MGD PM-9 was a French submachine gun, designed during late 40s - early 50s by Louis Debuit. A delayed blowback weapon, firing from an open bolt, it featured a highly unusual rotating flywheel as a delaying mass for its bolt. The design never made it to serial production.

Country Name Origin Year
France 1950

Type Submachine gun
Place of origin  France
Service history
In service never
Production history
Designer Louis Debuit
Designed late 1940s - early 1950s
Length 659 mm (25.9 in) stock extended
359 mm (14.1 in) stock collapsed
Barrel length 213 mm (8.4 in)
Cartridge 9 mm Parabellum
Barrels 213 millimetres (8.4 in)
Action Delayed blowback
Rate of fire 750 rpm
Effective firing range 100 metres (110 yd)
Feed system 32-round box magazine (MP-40 compatible)
Sights Iron sights

End notes