Here it is! Double-barreled SerLea ACE submachine gun. It was designed at 90s and only 4 prototypes have been made. It uses 30-round detatchable box magazines with 9x19mm Parabellum rounds, weights about 2,3 kg and ware made some Lebanese guys. I really like its weird design and hope you like it, too.
Also big thanks to Pavel Kutejnikov, because in the whole internet I found only his 3D model of this SMG, and his work hepled me to understand some things about this gun. So, now there are two.
P.S. It isn't exact replica of a real gun, because it is almost nothing about construction, details and parameters of SerLea in the internet.
https://www.artstation.com/kutejnikov