Pistolet maszynowy dywersyjny^{[pronunciation?]} (often abbreviated p.m.d., literally: Machine pistol, diversionary) is a name applied to a Polish prototype compact submachine gun or machine pistol design. As the name suggests, the weapon was intended as a light-weight, small and reliable firearm intended as a primary weapon of sabotage squads.^[1] The basic requirements for such a weapon were drawn by February 1939, the prototype was to be completed by November of that year by the Instytut Techniczny Uzbrojenia institute.^[1] The weapon was to use 7.63 x 25mm Mauser cartridges.^[1] However, the outbreak of World War II prevented the completion of the prototype and it never left the drawing boards.^[1] Because of that, it never received official military designation and is referred to in literature by its descriptive name rather than a proper name.

• (in Polish) Andrzej Konstankiewicz (2003). Broń strzelecka i sprzęt artyleryjski formacji polskich i Wojska Polskiego w latach 1914-1939 [Rifles and artillery equipment of Polish military formations and the Polish Army, 1914-1939]. Lublin: Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej. p. 298. ISBN 8322719442.