This weapon is not mine. And the screenshots are not mine.
This is a ROMANIAN AK-74. According to the author, the gun has a cartridge of 5.45 x 39 mm.
The weapon has a handle.
The model of this weapon is actually called PM md. 63.
More details about her:
PM md. 63 (Pistol Mitralieră model 1963) - a Romanian licensed copy of the AKM, differing only in the shape of the forearm with an integrated additional front handle (there were options with a standard forearm).