Choroszmanów submachine gun (Polish: Pistolet maszynowy Choroszmanów) was a Polish submachine gun created by Grzegorz Choroszman during German occupation of Poland.
Between autumn of 1943 and February 1944 Choroszman manufactured this weapon with his sons in his workshop.
It was used by Polish partisans in the Tadeusz Kościuszko unit, which men fought in and around Podlesie.
This design allowed Polish partisans to significantly increase the ferocity of raids and guerrilla strikes against the occupiers.
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