Thanks to our friend Hrachya, to day we have a manual for the Russian PP2000 submachine gun. The PP2000 is a very recent development, and has been in use with the Russian Ministry of the Interior.
Mechanically, it is a simple blowback design, chambered for the 9x19mm cartridge. It is made to be very light and compact, to compete with designs like the FN P90 and HK MP7. The weapon body is polymer, and it uses a grip design similar to the P90.
The PP2000 can be used with a detachable folding buttstock, or it can actually carry a spare 44-round magazine locked into the rear of the receiver, functioning as a crude stock. The front grip is designed to hold a detachable flashlight, allowing a decent degree of flexibility to the gun.
You can download the manual (in Russian) here: