Military Review

Karabina GD Bakalova (Bulgaria)

Gd Bakalov demonstrating SCHKBThe Bulgarian defense industry cannot boast with a large number of own developments in the field of small arms weapons. Before the collapse of the Warsaw Treaty Organization (ATS), this country produced only copies of Soviet-made small arms and almost did not deal with its own projects of such systems. The situation changed dramatically in the early nineties. Several designers took up the design of new pistols, machine guns and other weapons. One of such pioneers was designer Georgi Delchev Bakalov (not to be confused with Soviet / Russian gunsmith Vasily Ivanovich Bakalov, who worked at TsKB-14, TsKIB SOO and KBP). In the mid-nineties, he presented immediately two projects of small arms for various purposes. His designs were proposed for use in law enforcement and the armed forces.

Carabiner for police

In 1995, GD Bakalov received a patent for a new carbine of his own design. This weapon was intended for the police, namely for units involved in special operations and therefore in need of powerful weapons. In the design of his carbine, Bakalov used several ideas and solutions that were widely spread, but the overall look of the weapon was to some extent original and unusual.

Karabina GD Bakalova (Bulgaria)

Outwardly, the "police" carbine Bakalova resembled a machine gun or a submachine gun. The weapon had an elongated receiver, a pistol grip and a box magazine installed in front of the trigger guard. The barrel was covered with a cylindrical casing with perforations, starting from the receiver and continuing to the muzzle. However, despite the characteristic appearance, the carbine had nothing to do with automatic weapons. For some reason, the author of the project decided to build weapons based on the so-called. pompovoy scheme. The forend was made movable and rigidly connected to the bolt carrier.

Of great interest was the choice of ammunition. According to reports, the Bakalova carbine had to be equipped with barrels of different caliber, which allowed the use of .45 and .50 revolver cartridges. Probably, this choice of cartridges was due to the peculiarities of the mechanisms of the weapon and the characteristics of the cartridges. For example, the .45 Colt cartridge with a shell-free bullet has a relatively high stopping effect. In addition, when shooting in confined spaces, for example, in premises, a bullet without a shell practically does not give ricochets.

According to some sources, the “police” carbine Bakalova was supposed to be produced in three versions with different trunks: with a rifled barrel of the .45 caliber, with a rifled .50 caliber and with a smooth-bore (unknown caliber). Such a feature of the carbine, apparently, was to provide greater flexibility in its use and thus interest potential customers. As it turned out later, such measures turned out to be useless.

It is possible that the desire to create modifications of weapons for different cartridges and was the reason for the rejection of automation and the use of a pump system. To prepare the weapon for a shot, it was necessary to take the forearm to the rearmost position and return it back to the frontmost position. At the same time, the hard thrusts that bound the bolt group and the fore-end, took the bolt to the rear position, thanks to which he could take a cartridge from the magazine and send it to the chamber. Barrel locking was done by turning the bolt on two lugs. The absence of any automation allowed to simplify the design of the weapon. Karakina Bakalova consisted of only 30 parts.

The carabiner was proposed to be used with detachable box magazines for 10 and 20 cartridges. Stores were to be placed in the receiving window of the receiver and secured with a latch. The design of weapon receiving units resembles to a large extent similar parts of Kalashnikov assault rifles.

For obvious reasons, GD carbine Bakalova could fire only single shots, which, in particular, affected the complexity of the firing mechanism. For the safe handling of weapons in the trigger was included non-automatic fuse. His lever was pulled out in front of the trigger guard.

The carbine sights were simple: he got the usual open sight. The front sight was above the barrel barrel, the sight was on the receiver box, above the breech breech.

The carbine received a metal butt of a characteristic L-shaped form. If necessary, the butt could be removed from its attachment and transported separately from the weapon. This made it possible to reduce the dimensions of the carabiner, as well as to simplify its design due to the absence of any hinges.

The full length of the Bakalov carbine (with the butt) reached 710 mm. No stock - 495 mm. Weapons without ammunition weighed 2,7 kg. According to reports, the sighting distance of the carbine did not exceed 300-400 m. At a distance of 300 m, bullets of several shots "fit" into a rectangle with dimensions 30x40 mm. An important feature of the carbine was the simplicity and low cost of production. According to some information, at the price of one Kalashnikov rifle, the police could buy three Bakalov carbines at once.

In 1995, the designer received a patent for his development, but then, apparently, it did not work. The existence of prototypes of the new carbine is known, but there is no information on the adoption and procurement of weapons. Apparently, the potential customer, represented by the Bulgarian police, was not interested in these weapons and did not purchase them. Reasons for failure are unknown. There is reason to believe that the fate of the “policeman” carbine Bakalov was affected by its specific appearance and the incomprehensible tactical niche.

However, the Bakalova carbine is of some interest. This weapon combines the simplicity of design, low cost of production and the relatively high power of the selected cartridges. The use of weapons could be hampered due to the lack of automation, but the pros and cons of the carbine from the tactical point of view could only be shown by tests and experience of using them in real operations.

Assault carbine

In 1996, Bakalov received another patent. At this time, the subject of the document was a new machine, intended for the armed forces. The weapon received the name ShchKB ("Shchturmova Bakalova carbine" - "Bakalov assault carbine). While developing a new project, the designer tried to create modern small arms for the army, having characteristics at the level of other systems of this class, and also capable of using various ammunition. ShchKB machine gun could use Soviet intermediate cartridges 7,62x39 mm, NATO intermediate 5,56x45 mm and NATO rifle 7,62x51 mm. It should be noted that the SCHKB carbine was the first machine gun developed in Bulgaria.

Knowing the state and possibilities of the Bulgarian defense industry, in the new project Bakalov decided to use the components and assemblies already mastered in production. As a basis for the new weapon, AK series machines were chosen, which became a source of borrowed ideas and details. Nevertheless, following the latest trends in the field of small arms, Bakalov decided to build a SCHKB carbine according to the bullpup scheme, which made it possible to reduce its dimensions while maintaining the required characteristics. Despite all the innovations, SCHKB can be considered another deep modification of the Kalashnikov assault rifle, since these types of weapons are unified by 64% (46 borrowed parts from 72).

The new layout made it necessary to seriously modify some units of the basic automata. Thus, the receiver was changed to reflect the different location of the fire control knob and the installation of a new forearm. In the back of the receiver was provided with a plastic shoulder rest characteristic shape, covering the receiver. The receiving window and the magazine latch remained in place, and the pistol grip, trigger and safety bracket were moved to the front of the weapon. The trigger and trigger mechanism were connected with a special thrust.

The trigger mechanism has undergone some changes. The flag of the translator of fire was not provided. To control the mode of shooting was supposed to change the effort on the trigger: with an incomplete pressing, a single shot was made, with a full press - a turn. It is known about the development of USM modification, which allows shooting in bursts with a cut-off of three shots. For the safety of the use of weapons received automatic fuse. To disconnect the fuse, it was necessary to pull the trigger with a certain effort.

Changing the layout of the weapon allowed Bakalov to use the new barrel length 450 mm with a muzzle brake-compensator of the original design. Like the basic Soviet-made automata, the ShchKB had a gas outlet tube with a gas piston above the barrel. The bolt group was borrowed from Kalashnikovs with minimal changes, primarily associated with the use of other cartridges. The overall layout of this unit has remained the same.

A characteristic feature of all weapons, built on the bullpup scheme, is a high line of aiming, due to the layout of the units. Because of this, Bakalov had to equip the carabiner with a relatively high front sight and a carrying handle on the receiver. At the last was an open sight. The aiming line length was 330 mm, the design of the sight with four positions of the rear sight allowed to fire at distances 100-200, 300, 400 and 500 meters.

Carabiner SCHKB, depending on the modification, had to use one of three box-shaped detachable magazines with a capacity of 30 cartridges. Each of them was intended to equip cartridges of its type. At the same time, the magazine for 7,62x39 mm cartridges was a modified magazine from AK / AKM machines. Shops for 5,56x45 mm and 7,62x51 mm cartridges were made on the basis of corresponding foreign developments, but they had an upper part compatible with the mechanisms of AK / AKM and SCHKB automata.

The carrying handle provided for mounting for sights of various types. If necessary, the shooter could use not only a standard open sight, but an optical one of the desired type. At the muzzle of the barrel were attachment for a bayonet, borrowed from Soviet weapons.

The bullpup layout was fully justified: with a barrel length of 450 mm, the total length of the carbine was equal to 740 mm. Weapons without ammunition weighed 3,7 kg, with a magazine and 30 cartridges 7,62x39 mm - 4,52 kg. If necessary, the shooter could equip his weapon with a sight of the required type, a bayonet or a rifle grenade launcher.

A barrel longer in comparison with Kalashnikov assault rifles allowed the initial bullet velocity to be brought up to 750 m / s (cartridge 7,62х39 mm). The sighting range was limited to 500 meters. The rate of fire ranged from 600 to 900 shots per minute.

In the second half of the nineties, GD Bakalov was able to agree with the management of the Arsenal plant (Kazanlak) on the production and testing of a new assault carbine. Several ShchB units were manufactured and tested in versions for the use of different cartridges.

Tests were conducted during which the SCHKB carbine was compared with an AK machine gun. The Bulgarian weapon had an advantage in size, initial bullet speed and rate of fire. Effective muzzle brake compensator significantly reduced recoil force. At the same time, the SCHKB yielded to the Soviet competitor in accuracy and accuracy of fire, weight and reliability of work. According to the test results, the automatic rifle AK was rated 0,93, SCHKB carbine - 0,84.

The competition commission decided that the new development of Bakalov does not have significant advantages over existing weapons. In some respects, the SCHC exceeded AK, in others it lost to him. Because of this, in the final part of the test report, it was recommended to continue the development of an assault carbine with the aim of eliminating deficiencies, improving performance and simplifying production. The test completion document was signed in the middle of 2001.

According to reports, in the future Bakalov continued the development of his project and took some measures to improve the performance of the carbine. In addition, he again offered the military this weapon in a modified version. In April 2005, the Bulgarian Ministry of Defense reiterated a document concerning the SCHKb carbine. The military again abandoned their proposed weapons due to insufficient characteristics. The further fate of the project is unknown. Perhaps Bakalov continued to refine the project, but since 2005, there have been no new reports about the SCHKB carbine.

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  1. padonok.71
    padonok.71 20 August 2014 09: 17
    "Wunderwafele", what that. He (Bakalov) did SCHKB clearly with an eye on the OTs-14.
  2. avt
    avt 20 August 2014 09: 50
    And how does it actually differ from similar alterations of AK into a roll? Well, such as "Thunderstorm" and ykrsky "Boar"?
    1. padonok.71
      padonok.71 20 August 2014 13: 34
      For "Vepr" there is nothing to say. And from "Thunderstorm" - at least by age. "Groza" was put into production in 1989, and ShchKB
      In the second half of the nineties, G.D. Bakalov was able to agree with the management of the Arsenal plant (Kazanlak) on the production and testing of a new assault rifle.

      So Mr. Bakalov had plenty of time for a detailed "familiarization".
      And then OTsshka is a whole well thought out and balanced complex. There are even such things there (although I have not seen such a set "live").
      And SCHKB, I think so, is an unsuccessful attempt to get close to the army "bubble".
      1. gross kaput
        gross kaput 20 August 2014 13: 45
        The first time I see a long-barreled thunderstorm - is the sketch probably from the first estimates?
        1. MORDVIN13rus
          MORDVIN13rus 20 August 2014 15: 34
          This is the initial version of the Thunderstorm under 7,62x39, which was later abandoned, in favor of 9x39. And the complex itself was more processed for modularity
          1. padonok.71
            padonok.71 20 August 2014 18: 58
            A common misconception. The TKB-02 project (the future "Thunderstorm") was originally developed for two cartridges: 7,62 × 39, so-called. "army" (TKB-0239, OTs-14 Groza-1) and 9x39, SP series, so-called. "policeman" (TKB-0240, OTs-14-4A Thunderstorm-4). Modularity was a prerequisite for the design, according to the terms of reference.
        2. padonok.71
          padonok.71 20 August 2014 18: 47
          Yes. In "metal", as far as I know, four of them were made. All on the "kaukaz" disappeared. It was conceived to avoid the support of SVD, SVU (in order to unify), but it did not work out. The IED turned out to be more reliable, but ergonomically, too ...
  3. inkass_98
    inkass_98 20 August 2014 10: 40
    Especially delivers the title photo on the background of a friendly flag. am
    And yes, what washed away the ugliness of the AK, if the epigon was still worse in combat operation?
  4. gross kaput
    gross kaput 20 August 2014 10: 59
    "Probably, this choice of cartridges was due to the peculiarities of the mechanism of the weapon and the characteristics of the cartridges" - probably it could not be adopted by the police for these calibers, cartridges are absolutely not standard for Bulgaria, they will be produced for a couple of dozen police carbines - these will be gold , buying not the cheapest cartridges is also bad manners. As for the possible use of chavoito hunting cartridges, I am tormented by doubts - the receiver is too short even for the "smallest" shot cartridges, and too narrow for the most common 12.
    In general, this shooter appeared 100 years earlier in the then police, they would have torn it off with their hands, as well as an initially stillborn project. The only possible niche is hunting and sports - but for this it is necessary to lengthen the barrel and put a permanent butt and improve the overall design.

    Well, what about the rolls - another craft on the topic - "how to make a bulldog out of a shepherd dog in two steps
    1 - Take a shepherd dog
    2- Break the nose with a shovel "

    Amused by the statement that this wunderwafer significantly exceeds the AK in initial speed - and this, with an equal barrel length and the same gas outlet - do additional m / s with an probably earnest prayer be ordered before the shot?
    A two-mode trigger is evil, but the Bulgarians probably did it in order to remove the standard flag on the one hand, and on the other hand, not to bother with the processing of the AK trigger - they simply lengthened the new-made trigger rod. I was pleased with the "Effective" muzzle brake - they called it "effective" - ​​the active diesel fuel located close to the muzzle of the shooter's face on the weapon under 7,62X39 will add an indescribable experience to you with every shot - especially indoors!
    In general, there is only one conclusion - "Arsenal" makes good AK clones for every taste and color for the American market, but they cannot do something of their own, they have neither an established weapons school, nor competent designers.
  5. Alex_Popovson
    Alex_Popovson 20 August 2014 11: 47
    And mine is a good idea. At the same time, he did not notice obvious borrowings from Kalash, but the pump. And just like a policeman - a carbine is very successful, IMHO.
  6. gross kaput
    gross kaput 20 August 2014 12: 11
    Quote: Alex_Popovson
    And just like a policeman - a carbine is very successful, IMHO.

    It’s absolutely useless, you’ll forgive me, but my IMHO is based on experience in the Ministry of Internal Affairs, the price of such a shooter will be much higher than a PP or a semi-automatic carbine under a pistol cartridge - even firing from the front whisper (which is preferable for the police), but the combat characteristics of the store are much lower and the device is more complicated (due to the locking unit) and the price is higher. In addition, under the revolving cartridges capacious box stores can not be done, all that over 10 pcs. will be either complicated or not reliable, and most likely both. So the thing for police tasks is absolutely useless - although he could try to sell it to the Indians - until recently, the police rushed with smooth-bore Lee enfield under their .410 cartridge, although they were replaced there (though not so long ago) with automatic weapons.
    1. Alex_Popovson
      Alex_Popovson 20 August 2014 12: 19
      Oh thanks! Very balanced!
  7. brn521
    brn521 20 August 2014 12: 33
    Weapons without cartridges weighed 3,7 kg, with a magazine and 30 rounds of 7,62x39 mm, 4,52 kg.

    Well, why is he so needed, who will agree to drag such a fool on an ongoing basis?
    Quote: gross kaput
    Pleased with the "Effective" muzzle brake - they nadot it was called "effective"

    It looks like these are the very "some measures to improve the performance of the carbine." Whereas with this arrangement on the barrel, on the contrary, a tactical silencer is added, especially when dealing with the NATO 7,62x51. It's good that we are not talking about a pistol, or even a DTK would have been attached to it. With a pistol, by the way, and even then more real, I hooked the LCU and smack it from the hip, it won't hit the ears so hard. But with a turn it will not work, aiming in itself brings the DTK to the level of the ears.
    Quote: gross kaput
    they cannot do something their own, they have neither an established arms school, nor competent designers.

    This is no longer necessary. Now, with the advent of automated development tools, design issues are solved faster and easier. And even the first prototypes are easier to create with these newfangled 3D printers. A couple of decades ago, this was not even dreamed of. In general, production problems come to the fore. Which is noted in the article as the reason why the designer got just such a cross between a giraffe and a rhinoceros. The result is also noted, "The further fate of the project is unknown." Which is to be expected.
    1. gross kaput
      gross kaput 20 August 2014 13: 42
      Quote: brn521
      This is no longer necessary.

      And here, let the swami disagree - all computer problems and typewriters only make life easier for designers - but in no way can they replace an educated engineer.
      1. brn521
        brn521 20 August 2014 15: 13
        To learn the current design engineer in the presence of modern gadgets is much easier than similar, but during the Second World War, let's say. Feedback from current designers about PPP: a well-designed design, it is amazing how they could create it when there were no modern methods of development and design. And in fact, what the designer used to spend several years on, current students design for almost a month and pass as a thesis. At the same time, the designer is freed from a lot of paper work and other routine. Compare a 3D printer, albeit a cheap one - working not on steel, but on plastic, with how in the Second World War KB officers asked and stole plasticine from each other. In general, the progress is huge.
        So to create an arms school now is much easier than half a century ago.
        1. erg
          erg 20 August 2014 22: 00
          Sorry, but you wrote nonsense. To prepare an engineer today is not nearly easier than before. If only because it all depends on the person - he wants to study and become a specialist, or he just needs to get a diploma. And modern gadgets only slightly facilitate the learning process for students. The physical capabilities of a modern person to perceive certain signals that are transformed into information in the brain (this is how we receive signals, and information appears in the brain after processing these signals) are the same as those who lived before us. Therefore, a modern student and a student of the Second World War need the same time to master what is taught to him (however, it all depends on individual qualities). And modern gadgets only reduce time (you don’t have to run to the library, you can press what you need or don’t have to spend time rewriting the material, or you can copy it in full). Designers spend years, including today, not on development, but on bringing the product to mind. For, often embodied in the material, it does not show exactly those parameters that were calculated at the development stage. And so, then the long process of fine-tuning the product begins, and sometimes the entire design is completely revised, so that the final result is not much like the original design. And students create only a graduation project, and not the final product, which goes into series, although this is possible.
  8. brn521
    brn521 21 August 2014 11: 12
    Quote: erg
    Sorry, but you wrote nonsense. To prepare an engineer today is not nearly easier than before. If only because it all depends on the person - he wants to study and become a specialist, or he just needs to get a diploma.

    Judge by Russian standards. In the West it’s not enough to get a diploma, this is only the beginning, you still need to get a good job and prove your usefulness. To at least work out a loan taken for training. This is now in Russia the pursuit of pieces of paper, a diploma as a simple formality. A certain cabinet comes, his diploma is normal, but in fact the oak was an oak, instead of practicing it I went to the rocking chair.
    And as for the specific weapons business, I admit that I don’t know how they teach in Russia now. I judge the profession of a civil engineer. There is a friend, says several years of training - complete nonsense, the vast majority of which will never come in handy anywhere. All the same, in the end, a computer program is used, and the engineer is its operator. I mastered the program, consider you no worse than any engineer with education. You are assembling a project as some kind of constructor. Elements and their characteristics are already driven in, all calculations automatically go, drawings and papers are printed. The fact that the USSR had to draw a whole course and count without straightening its back is now sculpted for a couple of days. Bottom line: before engineers were driven into the heads of a lot of knowledge and skills that are now very few people need. Add a 3D printer here to create samples, and some student in a couple of months will be able to go the path that they once spent several years on. And not alone, but a whole design bureau.
    Quote: erg
    Designers spend years, and today, including, not on development, but on bringing the product to mind

    Moreover, "to the mind" does not mean the performance of the initial idea, but bringing the sample into line with the existing production facilities and already worked samples. Thus, the cost of the finished product is reduced to an acceptable one. As a result, whatever development you take, the same Kalash, only in profile. Here is the subject too.
    1. erg
      erg 21 August 2014 12: 03
      There is a friend, says several years of training - complete nonsense, the vast majority of which will never come in handy anywhere. All the same, in the end, a computer program is used, and the engineer is its operator. I mastered the program, consider you no worse than any engineer with education.

      Your friend is a mediocre engineer. Rather, he is not involved in engineering. Do not listen to such statements. Chat with real engineers, designers. YOU just have no idea how much knowledge an engineer needs, let alone a designer. How can one complete a course of higher mathematics, a course in strength of materials, aero and hydrodynamics and many other disciplines in a couple of months. And without them you cannot create anything new. (for reference: knowledge of aerodynamics, for example, is important, oddly enough, even for a civil engineer. How to calculate the behavior of a multi-storey structure of several tens of floors, when exposed to air currents, if we are also talking about possible hurricanes.) "to the mind" means precisely bringing the product to working capacity, including bringing it in line with the existing production capabilities. But this is what a process engineer does, if you don't know. Ideally, the technologist and the designer initially work together, from the moment the design begins. In general, a lone designer has not been working for a long time, but on products, be it a weapon, an airplane, a building, a ship, etc. often whole teams of designers work, each responsible for its own sector.
  9. brn521
    brn521 21 August 2014 14: 09
    Quote: erg
    Your friend is a mediocre engineer.

    Yes FIG knows. In Soviet times, he worked as an engineer. Then unemployment and work are not in their specialty. And then he tried to poke around in his specialty, they didn’t take it, they forced him to master the computer and study AutoCAD.
    Quote: erg
    How can I take a course in higher mathematics, a course of sopromat, aero and hydrodynamics, and many other disciplines in a couple of months.

    It all comes down to the fact that this course was passed by the one who wrote the program or applications to it. The rest turn into pushbuttons, although they are listed as engineers, and the papers are signed and approved.
    But I don't know how the gunsmiths deal with this. In the description of 3D printers, I came across that they understand and "print" projects created in the same AutoCAD. So the only question is how to create the appropriate applications for the same AutoCAD, taking into account the capabilities and ready-made options implemented by the industry.
    Quote: erg
    How can I take a course in higher mathematics, a course of sopromat, aero and hydrodynamics, and many other disciplines in a couple of months.

    So I'm trying on the subject of weapons. Of course, there is a half-forgotten course in "strength of materials, aero and hydrodynamics, and many more disciplines." But how much did all this help the same Kalashnikov? It is clear that he had to deal first with a variety of real weapons and developments made before him. This is what the weapons school is doing, among other things, the whole thing is accumulating and systematizing. So that the future designer himself could hold in his hands, disassemble / assemble, even shoot. It also contains all the documentation for industrial samples with dimensions and characteristics. We have our own workshop, and we have also established a connection with production to create prototypes. In general, a huge amount of work is evident in the creation of such a school. And let's take the current situation when you can put some AutoCAD and specialized applications for it. And that's all, play with this constructor as much as you like, sorting through existing parts and developing new ones. You can even cross a snake with a hedgehog, then print the resulting half-meter of barbed wire on a printer and see it in action. If it works, then here it is, the documentation is already ready. The gunsmiths of the Second World War did not even dream of such opportunities. As I say, they stole plasticine from each other. Hence my assertion that a designer with modern equipment will cope with the task much faster and easier. And it's easier now to prepare an effective designer for such tasks than half a century ago. Those. the presence of a weapons school is now not so critical for the development and creation of weapons.
    1. erg
      erg 21 August 2014 14: 52
      Excuse me, but you absolutely do not understand what you are discussing. Therefore, any argument is useless. Better close this topic.
  10. spech
    spech 22 August 2014 07: 36
    policeman weapon with a bayonet knife wassat
    although against the backdrop of the US flag? very relevant laughing
  11. psiho117
    psiho117 27 August 2014 21: 56
    ShchKB lost to the Soviet competitor in accuracy and accuracy of fire
    - pleased *))

    Remade into a bun, added DTK, and one horseradish was inferior to AK))
    Impressive curvature.