Military Review

AKS74U - to whom "Ksyusha", and to whom ... Further development (part-4)

In previous articles, we met the main competitors of the AKS74U at the Modern competition, went over the main differences between Ksyusha and the full-sized Kalashnikov machine gun, and, apparently, it’s time to get round this series of articles. I think that the best final will be a brief overview of those samples. weapons, based on the AKS74U, and there are a lot of them. Well, I propose to begin with a silent rifle-grenade launcher complex under the name "Canary".

Frankly, this rifle complex is not a new weapon at all, but the same AKS74U with additional devices installed on it, but nevertheless the weapon turned out to be quite interesting and replaced the “Silence”, standing out for its small dimensions and weight. The Canary is based on the AKS74U without any changes in the weapon itself, however, instead of a flame arrester, a multi-chamber silent-shooting device PBS-4 is installed, which prevents abrupt emission of powder gases into the atmosphere, and, therefore, eliminates this cause of the shot sound. In addition, 5,45x39 cartridges with a subsonic bullet can be used in the weapon, or rather they can not, but should be used, since only with them the firing of the weapon will correspond to the declared characteristics in terms of the sound of a shot.

Much more interesting is the grenade launcher part of the complex, which is represented by the BS-1M under-barrel grenade launcher. No matter how paradoxical it may sound, the grenade launcher is also noiseless. Naturally, the grenade shot of the most grenade-shot could not be made silently, but the process of firing the weapon itself is distinguished by a very, very quiet sound, which allows the enemy to fire at the grenade launcher without unmasking its position. It was possible to implement such noiselessness quite simply, the fact is that the grenade launcher has a separate power supply, that is, the missile projectile and the charge that the two different munitions pushes it out. In the handle of the weapon there is an 10 idle ammunition (8 for BS-1), the powder gases push the piston forward when fired, which in turn pushes the grenade launcher itself. Thus, the piston accelerates the projectile to 175 meters per second (100 meters per second for BS-1), and it leaves the rocket launcher, and the powder gases remain locked. When reloading, which is a return of the pushing piston to its original position, ramming a new expelling cartridge and charging a new grenade launcher shot, the already cooled powder gases are gradually released, after which the next shot can be fired. So Makar achieved almost complete noiselessness of the grenade launcher, well, and the explosion of a grenade launcher shot, of course, is not at all silent.

The under-barrel grenade launcher is fired by VOG-T shots, these armor-piercing-incendiary shots can be thrown to a distance of 100-150 meters, with a very favorable set of circumstances, you can throw them over a distance of 300 meters. This is the only combat version of the ammunition for this grenade launcher. In addition to him, there is also a training shot, which, in fact, is just an ordinary blank. The shots are stabilized in flight by rotation, while the movement along the barrel rifts is carried out along the already prepared grooves on the grenade launcher.

In addition to the silent cannon and grenade launcher complex "Canary" (after all, we know how to give names to weapons), there is another version of the AKS74U, which is designed for firing in low light conditions. This version of the weapon has the designation AX74UN2, and the machine gun itself is no different from the original, except the seat for the NSPUM night sight, therefore we will not dwell on this version of the weapon.

Much more interesting variant of the development of AKS74U is the automaton in the bullpup layout, namely the well-known “Thunderstorm”, which, although it has almost a complete external difference from the progenitor, but many common features are clearly visible. It is noteworthy that in this case the cartridge 5,45х39 was rejected, preferring 7,62x39 (Thunderstorm-1) and 9x39 (Thunderstorm-4) and the last version of the weapon has a barrel the entire length of 240 millimeters and this is despite the layout of the bull-papa weapon.

But you won't be fed up with some machine guns, AKS74U became the basis for many submachine guns, including "Bison", respectively, "Vityaz", "Tiss" and, I think, this is not the final, and AX74U in one form or another will be used as the basis for a new weapon.

This finally completes the series of articles about Ksyusha.
Photos used:
Articles from this series:
AKS74U - to whom "Ksyusha", and to whom ... Competition "Modern" (part-1)
AKS74U - to whom "Ksyusha", and to whom ... TKB-0116 main competitor (part-2)
AKS74U - to whom "Ksyusha", and to whom ... (part-3)
AKS74U - to whom "Ksyusha", and to whom ... Further development (part-4)
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  1. leonardo_1971
    leonardo_1971 April 17 2013 09: 25
    I really didn’t like the thunderstorm. The trigger pull is long. And the trigger is long. The trigger works for firing ammunition and you only need to switch the fire translator with the grenade launchers. And the trouble for all the bullets is an uncomfortable butt. We had a funny case. Our fighter unloading the weapon unfastened the magazine moved the shutter, throwing the cartridge out of the cartridge and made a control descent. but didn’t look that the fire translator was standing on the firing of the grenade launcher. The shooting in the premises of Vogue made a strong impression on us. Fortunately, the flight was short-lived and the grenade didn’t manage to cock.
    1. bazilio
      bazilio April 17 2013 11: 50
      Quote: leonardo_1971
      but I didn’t look that the fire translator was firing at a rocket launcher

      Well, an interesting feature. it seems convenient on the one hand when one trigger is for both pg and for the machine, but here it turns out that there is a minus
      Thanks to Kirill for the article as always
      1. scrabler
        April 17 2013 12: 15
        Thank you for rating, we will try again)
  2. Peacemaker
    Peacemaker April 17 2013 12: 14
    Silent grenade launcher is cool, no one except us in my opinion has such winked
    1. scrabler
      April 17 2013 12: 20
      It was possible to go even further, to make a grenade launcher with locking the powder gases in the body and knocking out the damaging elements with pistons, a sort of cartridges of SP-3 or SP-4. But then the high-explosive action is zero, and the defeat will be ensured only by knocking out elements with low efficiency, which you will not place much, and the dimensions of such a shot will be ... difficult to imagine winked
      1. avt
        avt April 17 2013 16: 10
        Quote: scrabler
        It was possible to go even further, to make a grenade launcher itself with locking powder gases in the body and knocking out the damaging elements with pistons,

        Well, this is already too much, even for committee members with their then budget. Well, in general, thanks for the series of articles good We are waiting for a new one at a good level. Now I’ll add on the general's epaulettes, it's high time. laughing
  3. mojohed
    mojohed April 17 2013 14: 40
    But in tight spaces for stripping, it’s convenient to bullpup
  4. Owl
    Owl April 17 2013 15: 47
    Of the products developed and produced on the basis of AKS74U, the division uses "Vityaz" and "Tis", to perform official tasks "Vityaz" is quite satisfied, the product "Tis", unfortunately, had drawbacks:
    - sights (rear sight with a small hole) did not provide fast accurate guidance on the target at distances of 50-100 meters;
    - an incomprehensible mount for the expansion joint, which does not allow the use of a home-made (made "at the level of a car service") tactical muffler-flash suppressor (the one that was shown at exhibitions did not reach the unit);
    - lack of mounts for attaching collimator or optical sights, for working in low light conditions.
  5. Raphael_83
    Raphael_83 April 17 2013 18: 46
    Uff ... Finally, I got over this opus, painfully stretched out for a whole week! I remember "TM" for the transition period 90-93, when I was waiting for the next release with the next chapter "Return to the Stars". What is the author preparing next? fellow
    About the silence of the explosion of VOG smiled winked, no, honestly - I never thought about this noise factor ...
  6. Argon
    Argon April 17 2013 22: 23
    The article is plus, informative, accessible, interesting. There is a cherished desire in the following articles, if possible, of course, when describing the principles of automation, to add animations to the text. I look forward to the next articles.
  7. papik09
    papik09 April 18 2013 05: 06
    "... but did not look that the fire translator was on the firing from the grenade launcher"

    The moral of this fable is this, the teachers were too bad, since the soldier did not know the weapon.
  8. stechkinmakarov
    stechkinmakarov April 22 2013 18: 20
    [media = http: // player-msg = 0]
    The use of AKS74U in battle.