Vörös Danuvia VD.01 helical machine pistol

https://archive.is/pSEmf
http://www.hungariae.com/DanuVD.htm

https://youtu.be/xcrR3Zw5-Q8
https://historiadelasarmasdefuego.blogspot.com/2009/09/pistola-danuvia-modvd-01-voros.html