Hisname

Please excuse me, but there is very little information on this pistol. This is a pistol for the cartridge .45 ACP; In the manufacture of the modification with a polymer frame, 3D printing technologies were used. The first version of the pistol with an all-metal frame turned out to be too heavy, but it was not completely rejected. It is preserved as a separate modification.
And the photo I came across only one. Here it is entirely:

In the figure with computer graphics, the silencer of the new modification with the lower location of the expansion chamber is most likely represented.
The project of the pistol is being developed in Tula, in TsKIB SOO (ЦКИБ СОО). And it is supervised by its director, Alexei Sorokin.
Data on the beginning of the project began to appear in early 2016. Alas, that's all I know about this pistol.
 

The ammunition hose is very tight and the shooter can not bring the machine gun to eye level.

Good afternoon, many thanks for the photos. The first photo shows a curved barrel 7.62 RPK light machine gun.
And on the second photo, a very rare experimental underwater machine gun with a belt feed.
Do you have any more pictures like that? I mean the experimental Soviet or Russian weapons.
Thanks!

This is a cartridge case from a PKMT (PKT)   machine gun, with 200 rounds.
But apparently it's a homemade thing. The usual box on the lid has no attachment to the machine gun. The usual canvas handle.
Most likely the lid is taken from the box for 100 cartridges. And that she did not come off had to pull the box with ropes (elastic bands). In the photo they are clearly visible.