| MGD_PM-9 | |
|---|---|
|  | |
| Type | Submachine gun | 
| Place of origin | France | 
| Service history | |
| In service | never | 
| Production history | |
| Designer | Louis Debuit | 
| Designed | late 1940s – early 1950s | 
| Specifications | |
| Mass | 2.53 kilograms (5.6 lb) (unloaded) | 
| Length | 
 | 
| Barrel length | 213 mm (8.4 in) | 
| Cartridge | 9 mm Parabellum, 7.65 mm Longue | 
| 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 | 
The MGD PM-9 was a French open bolt submachine gun, designed in the late 1940s or early 1950s by Louis Debuit and manufactured in small numbers by French firm Merlin and Gerin in the 1950s.[1] The PM9 was an unusual design in three different ways: it employed off-axis delayed blowback, it had a clock-style spiral mainspring similar to that of the Lewis gun, rather than the cylindrically-coiled spring used in the vast majority of self-loading firearms and, most unconventionally of all, used a rotating flywheel as a delaying mass in conjunction with the bolt.[2] It was furnished with a folding magazine, and some also had folding buttstocks, and this together with its original operating mechanism results in a highly compact weapon, but there is no known record of it being purchased or deployed by any military or police force.[2]
See also

- Barnitzke machine gun
- Hotchkiss Universal
- Hotchkiss Type Universal
- KRISS Vector
- List of submachine guns
References
- ↑ McCollum, Ian (May 23, 2017). "MGD PM9 Rotary-Action Submachine Gun". Forgotten Weapons.
- 1 2 Popenker, Maxim (October 27, 2010). "MGD PM-9". Modern Firearms.
External links
| External images | |
|---|---|
| MGD PM-9 submachine gun | |
|  Extended | |
|  Collapsed | 
