Пистолет-пулемет CH 9/25 submachine gun
Опознан неизвестный пистолет-пулемет с фото в SoF (may/86). Собственно-опознан он был еще в 2010 г. на ганзе, в соответствующей теме, но до ЖЖ руки только сейчас дошли.
Вкратце:
разработка лондонской Jumbo Engineering, свободный затвор, выстрел с открытого затвора, 2 возвратно-боевые пружины на направляющих затвора, переводчик огня и не автоматический предохранитель отсутствуют, выбор вида огня - нажатием на спусковой крючок (нижняя часть спускового крючка- одиночный огонь, верхняя часть спускового крючка- непрерывный огонь), автоматический предохранитель на рукоятке, темп стрельбы 900-950 выстр/мин с возможностью увеличения до 1200 выстр./мин. Прицельные приспособления открытые, имеется база для установки оптики. Магазины от "Узи". При производстве используются литье под давлением.
Производство: Combat Arms, ЮАР, Йоханнесбург, 1986 г., даты создания и производства достоверно не установлены (рабочая версия- 1985-86 гг.). Обозначение модели как SH9/25 встречается в издании "Firearms Developed and Manufactured in Southern Africa 1949-2000".
Пистолет-пулемет CH9/25 (или SH9/25)
Калибр:...................................................9мм Парабеллум
Общая длина:........................................705 мм
Длина со сложенным прикладом:........470 мм
Длина ствола: .......................................285 мм
Нарезы: .................................................5, правосторонние, шаг нареза 250 мм
Масса:....................................................2,9 кг
Емкость магазина:................................20,25,32 (стандартные от ПП Узи)
Темп стрельбы:.....................................900-950 (до 1200 выстр/ мин).
Нашлись 2 статьи одного и того же автора, текст, по большому счету, одинаков:
International Law Enforcement Supplement "The CH9/25 Sub-Machine gun"
by John Norris
Whenever 'experts' predict the demise of the sub-machine gun, a firearms manufacturer develops another design of weapon to prove them wrong, There are a number of such instances, the latest involving a London based firm called Jumbo Engineering. From its workshops comes a new SMG design, with a number of standard features as well as some radical ones. The weapon is designated the CH9/25, and fires standard 9mm Parabellum ammunition. It is still in the prototype stage but, even so, has passed all expectations, such as shooting accurately out to two hundred and fifty metres.
The CH9/2S appears in two variations, following several years of intense development. Firstly, the standard SMG type was perfected, followed by a fully supressed or silenced version. The weapon operates on the conventional blow-back design, with safety, ease of use, and reliability of operation being of paramount consideration. The weapon incorporates a number of innovations which are normally found separately on several different weapon designs. In this particular case, it appears that all of the good points from SMGs have all been brought together to produce a highly promising weapon. As with other designs, the CH9/25 is designed to function in all extremes of temperature and terrains, including sand, mud and water, none of which affect the robust and well constructed mechanism.
The rigidity of the weapon's design means that it can function properly after being consistently dropped from varying heights, and generally maltreated, In fact, one of the field trials was for the weapon to be completely immersed in mud and water, after which it operated without blockage and requiring no cleaning at all. The CH9/25 is virtually dirt-proof and jam-proof, requiring little or no lubrication, which is a particularly useful feature on prolonged operations, where resupply of lubricants could be a problem.
However, the manufacturers do claim the CH9/25 to be self-cleaning, and take pains to stress this point. For stripping, the weapon is broken down into five basic parts: the barrel, the main body housing, pistol-grip and firing mechanism, magazine and breech block and bolt. Normally effected in. approximately ten seconds, this procedure could take longer in cold climates, where fingers become stiff and numb. There are no intrinsic parts, as on other designs, to become lost, and the weapon can be reassembled very quickly in emergencies.
The CH9/25's magazine housing and receiver are made in one piece, via investment casting. This method of manufacturing eliminates possible weak spots which may occur in welding joints. The front portion receives the barrel, which is held in place by a retaining nut, similar to that of the Beretta Model 125 and the Second World War M3 'Grease Gun'. At the rear is the bolt, mounted on a pair of parallel rods, which is held in place by a retaining nut, which is actually attached to the rear of the bolt.
The firing mechanism is straight forward, but has a number of built-in safety features. Firstly, the trigger has a double-curve design to control both the automatic and single-shot modes of firing. By depressing the trigger using the lower curve only enough pressure is exerted to produce single shots. When the upper curve is used, the pressure exerted on the trigger is enough to obtain full automatic fire.
As with other SMGs, such as the Uzi, the CH9/25 has a pistol-grip safety device. This device has to be fully depressed by the palm of the hand, when gripping the weapon, in order to unlock the sear. If it is not fully depressed the bolt cannot function and the weapon will not fire. This action also acts as a secondary safety feature, which ensures there is no discharge if the weapon should be accidentally dropped while in a ready-to-fire state, Even though there is no safety catch or fire selector lever, the CH9/25 remains a very safe weapon to handle.
As mentioned, the weapon operates on the normal blowback operation and fires from an open bolt position. This method of operational firing can produce instability, but, in the case of the CH9/25, this has been overcome. It remains very stable, and is not given to muzzle climb during prolonged bursts of fire. In fact, it is steady enough even in automatic fire to be used one-handed. The muzzle velocity is 450mps and the normal cyclic rate for the weapon has been established as 900 to 950 rpm. This can be increased to 1200 rpm with no adverse effects, such as overheating or 'cook-offs', due largely to the open bolt firing mode which aids cooling. Even the lower cyclic rate of 900 to 950 rpm is over 90% better than the Steyr MPi69 or Heckler & Koch MP-5, which fire at 550 rpm and 650 rpm respectively.
Iron sights are fitted as standard to the front and rear of the main housing, and these are of the usual post and aperture design Also standard on the basic CH9/25 is the provision of mounting blocks for a telescopic sight. As these are part of the original investment casting they provide a really firm fixing point for various sight units. Using just the iron sights and 9mm Parabellum rounds, the weapon can achieve above accurate groupings out to two hundred metres.
The standard Uzi magazine of either 25 or 30 round capacity is the type selected for use with the CH9/25. However, the manufacturers state that any 9mm type magazine can be used with the weapon after only minor modifications. The magazine housing is open-sided, in order to allow the magazine indicators to be viewed, although this feature might prove to be a drawback, as it could allow ingress of dirt and grit into the feeding rollers of the magazine itself.
The length of the CH9/25 with its stock folded is only 470mm, this extending out to 705mm. The barrel is 285mm long, with five groove right hand turn rifling, with a complete turn in 250mm,
The suppressed or silenced variant of the weapon is fully integrated in design, using standard CH9/25 components, and is not audible at 20m. When fitted with a 'Single Point' or similar type of sight unit, or a telescopic sight, the weapon is capable of giving first round hit capability in either single-shot or fully automatic mode. The latter is not recommended, however, as it would result in damage to the baffles of the suppressor device.
The wire stock folds forward and under the weapon, to fit neatly along the curve of the forward hand grip. It is quite sturdy in design, and is quickly deployed or stowed. The cocking handle is on the left hand side of the receiver, just above the forward hand grip, Apart from this one side protrusion, the CH9/25 is a well-built weapon with clean lines and a good point of balance.
Armed Forces "The New 9mm CH9/25 sub-machine gun"
by John Norris
RECENTLY, the London based firm of Jumbo Engineering released a newly developed SMG from its workshops. Known as the CH9/25 it fires standard 9mm Parabellum rounds and has an effective range out to 250m. It is at present in the prototype stage.
Jumbo Engineering has spent several years perfecting the weapon, which appears in two forms, standard SMG and silenced. It is basically of conventional design, with reliability, safety and ease of use being foremost in operation, but incorporating a number of innovative features. Like other SMGs, the weapon, is designed to operate in all climatic regions, and sand, mud and water, which do not affect its rugged working mechanism. In fact, its rigidity in design ensures that it will function properly even after being dropped time after time. It is dirt-proof and jam-proof and requires little or no lubrication. Unlike other weapons, the manufacturer does not claim this to be a self-cleaning weapon - it breaks down into five basic parts for field cleaning in 10 sec.
The receiver and magazine housing are made in one, through investment-casting, and therefore has no weak spots in welding. The frontal portion receives the barrel and is held together by a retaining nut. At the rear is the bolt, riding on two parallel rods, also held in place by a securing nut.
The firing mechanism is fairly simple in design and incorporates a number of safety features. The trigger is a double-curved design and controls the firing mode in both single shot and fully automatic fire. By depressing the lower portion of the double-curved trigger the pressure exerted is enough to produce only single shots. By moving the index finger higher up the trigger, to the next notch, the pressure exerted is enough to produce automatic fire. This action eliminates the need for a fire selector lever, and no other movement of the hand is necessary.
Like other SMGs there is a built-in safety in the pistol grip, which must be fully depressed in order to release the sear, otherwise the bolt will not function and the weapon will not fire. The action also acts as a further safety measure if the weapon is dropped, by preventing accidental discharge. Although safety and fire selector levers are not present on the CH9/25 this does not means the weapon is not 'safe', on the contrary, if not held properly it will not function.
The weapon works on the conventional blowback principle and fires from an open bolt. A cyclic rate of 900 to 950 rpm is normal for the CH9/25, but it can be pushed to 1,200 rpm, which is better than either the German MPS or the Austrian MPi69, with cyclic rates of 650 rpm and 550 rpm respectively. When in the fully automatic mode the weapon is very stable and not inclined to climb during bursts. The muzzle velocity is 450m/sec.
Iron sights, with a 335mm radius of vision, of the normal aperture type are standard on the CH9/25 and produces well above average groupings on targets out to 200m, which is good considering 9mm Parabellum is not noted for its accuracy over long ranges. Telescopic sights can be fitted to the backets on the top of the receiver housing. These fixing points are included in the original casting. The result is a firm base for the telescopic sight and accurate alignment.
The magazine used is the standard Uzi type, which has either a 25 or 30-round capacity. However, the CH9/25 is able to take any magazine available, after slight modifications. The only drawback of the weapon is the open-sided magazine housing which allows the indicators of the magazine to be viewed. This could allow dirt and grit to enter, which might not affect the weapon directly, but could prevent the magazine from feeding properly.
The overall length of the weapon with its wire stock extended is 705mm. This is reduced to 470mm when the stock is folded. These dimensions make it an ideal weapon for the driver of a vehicle to use as a side arm. The barrel is 285mm long and has five grooves cut into it, which have a complete twist in 250mm. Weight is 9.90kg.
The silenced version of the CH9/25 is a fully integrated design using the standard components, and is not audible at 20m. With a 'Single Point' aiming aid mounted on the sight mountings in place of the telescopic sight, it will give a first round hit capability. The wire folding stock folds forward to fit neatly along the curve of the forward hand grip, and is quite sturdy. With the cocking handle on the left hand side of the receiver, above the forward hand grip, this is the only side protruding piece on an otherwise clean lined weapon.
Засветился пистолет-пулемет CH 9/25 и в советской профильной периодике, конкретно- в журнале "Техника и вооружение":
