From the author
In the middle of March, at some forum, I accidentally found an image weapons, hitherto unknown to me and it caught my attention with its unusual appearance.
The shape of the forearm and the receiver cover resembled PP "Lynx" or "Vityaz", but there were also differences.
But it all said that the product is a distant relative of “Kalash”.
So it turned out.
On the pages of “Military Review” I did not find a single mention of this “trunk,” and therefore I decided to collect enough material for review and lay it out for the same weapon lovers like me.
In general, I nadergal from different places of pictures and a couple of paragraphs of text, added a little from myself and here you are, please: review about the experimental submachine gun "Cheetah" is ready.
Do not judge strictly on the quality and completeness of the material provided - it is better to share information if you have one.
At the beginning of 90, Russia was swept by a wave of crime, and in order to counter it, law enforcement agencies urgently needed a compact automatic weapon of concealed carrying for close combat.
It required a weapon that had a killing power of a bullet and its tendency to rebound would be less than that of the AKS-74U.
It was then, at the request of law enforcement agencies, many design bureaus resumed work on improving the models developed in the 70-s and 80-s, and also began to create new weapon systems.
At the time, E.F. Dragunov began to refine the PP-1970 created in 71 for the Soviet Army and the Klin (PP-9) and Cedar (PP-91) were born.
At about the same time, the Tula, Kovrov and Izhevsk design bureaus created such small-sized software as Kashtan (AEK-919K), Cypress (AEK-919K), Cobra (PP-90), and Bison (PP-19) other.
In the middle of 90-x it became clear that due to the use of insufficiently effective ammunition (9x18 PM and 9x18 PMM) most Russian submachine guns do not provide reliable destruction of targets in personal protective equipment.
According to the opinion of the specialists of the research institute of the Ministry of Internal Affairs of the Russian Federation, it followed that out of this whole galaxy, only Bison could have met their requirements, if not for its screw shop.
The appearance of the light
Based on the changed requirements and looking back at the experience of their colleagues, the design team consisting of A.V. Shevchenko, G.V. Sitov, I.I. Sitnikov began, on his own initiative, to develop his own design.
The authors dreamed of creating a universal modular complex,
which, depending on the tactical situation, the shooter could use as a submachine gun chambered for 9x18 PM, a silent weapon for the 9x21 SP-10 cartridge or for the Thunder 9XNNXX cartridge specially developed for it.
And so that all necessary changes in the design could be made by the shooter himself by replacing several parts in just a few minutes, immediately before the start of the operation.
Sketch software "Cheetah" with a shop on 40 cartridges.
The joint development of specialists from the AOZT of the Rex armory company and the 33491 military unit was completed in 1995, and in the 1997, the experimental Gepard submachine gun was first presented to the public.
By that time, the “Cheetah” was tested at the Rzhevka training ground (33491 military unit) and the All-Russian Research Institute of State Patent Examination (VNIIGPE) received a positive decision under the number 95501070 (032975) from 02.11.95.
PP "Cheetah" with PBS. Right view.
PP "Cheetah" with folded butt. Left view.
PC "Cheetah" (known also under the names 9 mm submachine gun "Gepard" or Personal Defense Weapon "Cheetah") is distinguished not only by its memorable appearance, but also by the ability to use up to 15 (fifteen !!!) types of domestic and foreign pistol caliber 9 mm of different power.
"Cheetah", as well as PP "Bison" was developed on the basis of 5,45-mm Kalashnikov assault rifle AKS-74U, from which borrowed about 65 - 70% of parts.
It was assumed that such a high percentage of unification would allow, if necessary, quickly and with the least financial costs to organize the production of the "Cheetah" at the Tula Arms Plant, which previously produced 5,45-mm АКС-74У.
According to unverified data, the civilian version of the Cheetah could have been produced by the REX Firearms gun campaign from St. Petersburg, as if it were a subsidiary of AOZT Izhmash.
The complete set of software "Cheetah" consists of the following parts:
barrel, receiver, receiver cover, gas tube with lining, handguard, butt, ergonomic fire control frame, magazines for 20 and 40 cartridges, trigger mechanism, replaceable firing units (gates), return mechanisms (replaceable), muzzle devices (muzzle brake-compensator-swirler-flame arrester, coupling, sleeve for idling, device for silent flameless shooting).
At PP "Cheetah", the sights of the open type, as in the AKS-74U, consist of a reversible rear sight on the 100 and 200 m and a fly, which can be adjusted both in the vertical and in the horizontal planes.
The barrel has original replaceable chambers, which allows the use of a wide range of cartridges, namely:
With a universal transition chamber:
9x18 PM all nomenclature (bullets with lead and steel cores, bullets
all-metal and expansive),
9х18 PMM (all nomenclature),
9х19 with a bullet of increased penetrability (RGO57 / 7Н21),
9x19 PARA (all nomenclature),
9х21 (РГО54 / 7Н29 / СП-10) with a bullet of increased penetrability.
* I ask Kirill Karasik to correct it: he was 2 years ago about special rounds.
With the chambered chambered for 9х30 "Thunder" (developed in the 33491 military unit):
9x30 "PP" - with a bullet of increased penetrability,
9х30 "BT" - with an armor-piercing tracer bullet,
9х30 "PS" - with a lead core bullet,
9х30 "PB" - with subsonic bullet speed
The software company “Cheetah” exceeded both the accuracy of a single fire and the accuracy of firing in short bursts (3-5 shots) of most of the existing domestic submachine guns.
The advantages of accuracy are achieved through the use of a rational layout of a submachine gun, placing the frame handle under the center of mass of the weapon, as well as using an effective muzzle brake-compensator-swirler, and in automation - balanced shooting interchangeable units (gates), a rigid fixed butt (folding on left side), a trigger trigger, similar to the AK74, a special design of the barrel bore (weakly pronounced cone to the muzzle part, rational steepness of call).
The radius of dispersion of hits at distances 50 and 100 m.
Photos from the bourgeois press.
Photos from the bourgeois press.
The distance of confident destruction of targets in body armor.
Photos from the bourgeois press.
Photos from the bourgeois press.
Another table with the statistics of slaughter from the bourgeois press.
To solve various special tasks, the Cheetah PP had interchangeable firing units (shutters) that were easily replaced without special tools and tools.
For shooting 9 mm cartridges 9x18 PM used the shooting unit number 1, which was a free gate, consisting directly of the bolt body and the inertial mass (frame). The frame had a lightweight gas piston, which made it possible to impart an additional impetus to the frame, using the energy of the powder gases discharged through the vent hole in the barrel into the gas chamber.
The use of combined automation (free gate with removal of powder gases) made it possible to ensure trouble-free operation of automation in various climatic conditions in the temperature range - 50 ° С ... + 50 ° С.
For firing 9-mm cartridges 9x18 PMM, 9x19 PARA, 9x19 WG057, a shooting unit No. 2 was used, which was a unit No. 1 with a heavy additional replaceable gas piston and a return mechanism No. 2 with a spring with increased preload force.
For shooting 9-mm cartridges 9x21 РГ052, РГ054 (СП10) used the shooting unit number 3, which was a semi-free shutter, consisting directly of the shaft of the shutter rotating around the longitudinal axis and the inertial accelerated mass (frame).
The frame had a lightweight gas piston, which made it possible to impart an additional impetus to the frame, using the energy of powder gases, similar to the firing unit No. 1.
The shutter had two lugs with an inclination of 40 degrees.
In the extreme forward position, the bolt turned to the right with the figured protrusion of the frame and the lining stops of the bolt went behind the lugs of the receiver.
When fired by the pressure of the powder gases to the bottom of the liner, a slow turn of the bolt took place, the inclined lugs cooperated with the lugs of the receiver, the upper lug of the bolt interacted with the figured notch of the frame and accelerated its movement back.
An additional portion of powder gases in the gas chamber gave an additional impetus to the frame, which ensured trouble-free operation of the automation in difficult conditions.
For shooting 9-mm cartridges 9х30 “Thunder” A 4 firing unit, which was a bolt with two lugs, rotating around a longitudinal axis and a bolt frame with a gas piston (similar to AKS-74Y) was used. Automation worked by removing a part of the powder gases through the gas outlet in the barrel, similar to AKS-74U.
Additionally, before shooting, it was necessary to replace the universal chamber with the chamber 9х30.
The use of the powerful 9X30 cartridge made it possible to hit the enemy in body armor 6B2 * at distances up to 400m, which gave him significant advantages over modern domestic and foreign machine guns.
* ZH-81 (GRAU index 6B2) - the first generation Soviet splinter vest.
“Cheetah” had an original fire control frame, which allowed shooting using two hands or one hand in extreme situations, shooting from the shelter “blindly” with minimal risk from enemy fire to the shooter, from the hip, from the armpit, through clothing ( with hidden wearing).
The original suspension of the belt through the upper and lower swivels allowed the use of software "Cheetah" for concealed carrying with the magazine on the 22 cartridge.
The presence of an automatic fuse directly on the trigger (similar to the “Glock-17” pistol) allowed the translator to be translated into single or automatic fire while hidden wearing PP without sacrificing the safety of the weapon, which gave the shooter the possibility of a sudden opening of fire in extreme situations.
Two medium weapon
The versatility of the sample was expanded due to the possibility of fire under water to defeat the enemy at distances 3-5m using 9х19 РГ057, 9х21 РГ052 and 9х21 РГ054 (JV 10) cartridges.
The presence of a flameless silent firing device made it possible to perform special tasks from the 9-mm “Cheetah” software silently, minimizing the unmasking factor (sound, flame, dust), in addition, the design of the device reduced the unmasking factor (gas bubble) when firing under water and allowed successfully perform combat missions covertly in two environments simultaneously.
All of the above innovations can significantly improve the effectiveness of the combat use of submachine guns.
The creators read that the 9-mm submachine gun “Cheetah” most fully met the requirements of modern combat.
According to unconfirmed data, the scanty number of “Cheetahs” came to some kind of special purpose unit for testing, and the 2 “Cheetah” seemed to be even “lit up” in Chechnya.
The unification of the submachine gun with the base model AKS-74U allowed without significant changes in the design of the software package “Cheetah” to produce software “MINI-Cheetah” with dimensions of software “MINI-Ultrasound”, which allowed the use of a lighter and more compact submachine gun for wearing hidden when performing special tasks.
The creators assumed to produce a civilian version on the basis of the Cheetah software.
The prototype was presented at the Moscow International Weapons Exhibition in July 1997 of the year as a hunting cheetah with a special cartridge 9х30 mm "Thunder".
It differed from the base model in an elongated barrel and the shape of the butt and was completed with an 20 magazine for cartridges.
Most likely, in the civilian version there was no automatic shooting mode and the possibility of using all types of ammunition.
A strange marketing move, to say the least.
Neither we nor abroad about the special bullets 9x30 mm "Thunder" have never heard of it.
After all, it was developed simultaneously with the PP "Cheetah" and specifically for it.
I think that it would be better to offer a version chambered for 9x19 PARA.
So a few years later, they entered Beretta: they produce a semi-automatic CX4 Storm carbine for a pistol cartridge.
Table with prices for various modifications. Again from the bourgeois press.
Despite the fact that first-class technical solutions are implemented in this weapon, it is unlikely that it will ever be put into mass production.
The complexity of refitting a submachine gun for various ammunition does not compensate for the advantages of different-sized weapons.
"Cheetah" has in the set at least three different valves and two return springs, with which the arrow will have to suffer.
Moreover, in Russia there are weapon systems that have already been adopted and are in mass production.
They can also solve all the tasks for which this unusual submachine gun is designed.
Of course, some special-purpose units, which will have to be in the territory controlled by the enemy for a long time, may like such weapons, which can use the most diverse types of 9 mm ammunition.
In general, as with all such systems, the practical use of the Cheetah is many times greater than all the advantages offered by weapons, allowing the use of various types of ammunition.
Also, do not forget that the shooter must carry a set of valves and return springs and remember that it fits a certain type of cartridge.
Simply, the “Cheetah” complex turned out to be too large (as a multitool) and difficult for the armed forces to use it in this form.