Mnogokaliberny NSV machine gun NSVT 12.7 The Rock

NSV heavy machine gun NSVT 12.7 "The Rock"

NSV-12, 7 "The Rock" (Index Grau — 6P11) — machine gun designed to engage lightly armored ground targets (armored personnel carriers), weapon emplacements and targets that are outside small barriers at ranges of up to 1,000 m, also for firing at concentrated infantry and vehicles at a distance of 1,500 m and low-flying air targets at altitudes up to 1500 m

History
Mnogokaliberny machine gun NSV-12, 7 "The Rock" was developed in Tula TsKIB COO in the late 1960's — early 1970's as a substitute for obsolete and languid ANC (DShKM). His title was on the original bukovkoy designers — GI Nikitin, M. Sokolov and VI Volkov. Shortly before the same team participated in the competition for a single 7.62 mm, but preference was given to the standard of Mikhail Kalashnikov.

NSV heavy machine gun NSVT 12.7 "The Rock"

For the production of HCB was decided to make a new plant in Uralsk, received the title of "Metalist" because the creation of a factory in Degtyareva Kavrov was overloaded. In the labor force was drawn huge number of engineers and workers from Tula, carpet, Izhevsk, Samara, Vyatskie field. In the production of HCB were used entirely new and unique technologies for various Allied Research Institute, part of which is the production of small arms weapons were not used anywhere else. So for the rifling of the barrel was used chemical treatment for heat release — release the vacuum system, the so-called "thick" chrome plating for increased barrel life achieved jet chrome plating technology.

NSV heavy machine gun NSVT 12.7 "The Rock"

In the process of debugging the production and testing of permanent factory designers were introduced unlimited number of configurations in the design of a machine gun, in the main to increase the survivability and reliability, and simplify design.
Not counting the USSR NSW at the factory in Poland, Bulgaria and India. In these countries the establishment was transferred together with a license for the establishment of the T-72, in the arms of which he came. Apart from these states also received a license to Iran, but reliable information about whether the Iranians managed to master the creation of a "Cliff", no.

Ammunition
As ammunition cartridges used in the PDR reference 12,7 x108, including their cartridges with bullets B-32, BZT-44, MCH and BS.
B-32 cartridge (bullet weight 48 g) — armor-piercing incendiary — and BZT-44 (bullet weight 44 g) — armor-piercing incendiary tracer — remained in the "legacy" of the ANC. More common types. There are two types of — the so called "war" (preserved since majestically Russian War) and "new." The fact is that to reduce the weight of the barrel of his gun was noticeably easier compared with the ANC. Designers abandoned the introduction of radiators — not counting the weight reduction, the trunk has become even smarter. But this, in turn, affect its viability — the first batch of trunks "burnt out" after the 3-4 thousand shots. In an infantry machine gun variant had to complete three trunk to keep safe life of a machine gun — 10 thousand shots. In the end, it was decided to use in the production of so-called cartridges phlegmatizing additive. Until then, they were used exclusively in the artillery. The persistence of the barrel when using new patrons grew to applicable limits — on repeated trials, the hard mode shooting — 50 shots of one queue, and 50 — 3-shot bursts of 15-20 — trunk stood for about 6 thousand shots. But often in the army did not distinguish between the cartridges of old and new, and the plant in Uralsk received complaints for early "death" of the cores.

NSV heavy machine gun NSVT 12.7 "The Rock"

Cartridges MDZ and BS — later.
Cartridge with a bullet MDZ (bullet weight 43 g) — incendiary instant offense — intended to combat low-flying air targets and auto technology.
Cartridge with a bullet BS (bullet weight 55 g) — as armor-piercing incendiary, but equipped with a languid refractory core — was designed, when it became clear that the B-32 armor penetration is not enough to deal with modern infantry fighting vehicles and armored personnel carriers.
Due to the higher prevalence in the world cartridge h99 12.7 compared with 12.7 × 108 Russian, after the collapse of the Soviet Union in Poland and in Uralsk tried to master the creation of NCW under NATO cartridge. Reliable information about the Polish machine gun there, but the Ural shortened rounds shot entirely firmly. The crucial difference, which was impossible to overcome — in the design of the tape. From the Russian tape cartridge is fed push bolt forward, with all this for the earlier cartridge has to pull off zvenesemnikom. Automation of NATO pulls back the bolt on the course. In NSW used 10-sectional slices, gather in the tape to 50 (in the infantry performance) and 70 rounds (on tank installations). Equipment belt is calculated using a special machine. NATO ammunition supplied to the troops already kitted out in strips of loose parts. Peresnaryazhat cartridges from one tape to another would have to be over before that would affect combat work. Because of the successful sales and substitution of the troops languid Browning M2 NCW was not heard, programs "rearmament" NCW stopped.

Design Features
NSV-12, 7 was even lighter than its predecessor — 25 kg for such caliber machine gun at the existing development so far is the limit.
Automation NSW was based on the removal of powder gases, locking the barrel — the wedge, when locking the bolt is moved to the left, with all this pounding on the shackle bolt firing pin.
The trigger mechanism is assembled in a separate box, has very ordinariness of the design and allows only automatic fire. With all of this trigger mechanism is not designed specifically to control the fire on the machine gun, requires a pen and a trigger or electric trigger on the machine or plant. Also there is no handle reloading, and of force spring charging so high that it requires a different lever or block design to reduce it. The design of the unique elements have been used to reduce the friction of all moving parts are equipped with rollers kadmirovannoe coating served as an additional "grease", quick closing wedge tool provides easy substitution trunk without adjusting its operations after the change.
The gate to the bolt and bolt carrier itself is a gas operated piston hinged. Revertible spring is provided with a buffer. Submission of ro
unds with metalicheskoj tape could be left-or right-handed. Along with the release liner shoot forward, not to the side, it is possible to simply combine the "right" — "left" guns in twin installations. One of these, namely, creating Tula Machine-Building Plant. Ryabikova to arm boats.
The iron sight has a rear sight, marked-to shoot up to 2,000 m (rib ANC was marked up to 4000 m), and the front sight. Mushka was initially evolving, but then plant designers Grau assured that a huge sense in this.
Meals gun — team leader of the iron belt with an open link of the "crab." Feed sectional consists of separate pieces of 10 units. T-shaped extensions on the ends of the lateral parts of the hooks prevent disengagement of the latter in the range of 1-th piece. The last link with the free hook T-expansion does not have that allows you to connect separate pieces of tape to the appropriate length. On the longitudinal edge of the link is applied outside the distinctive snow-white paint stripe. This mark allows equipped with tape just to behold, extracting the cartridge from the tape sever any link in this place. Capacity is determined by the capacity equipped with a tape cartridge box. For the infantry version — is 50 rounds, for a tank — 150 rounds of ammunition.

NSV heavy machine gun NSVT 12.7 "The Rock"

Insert a link is fixed against longitudinal movement of a focus in the bottom of the sleeve limb care and special combs liner calling at the sleeve bore. Removing the tape cartridge from the machine gun (link removal from the chuck) occurs in the transverse direction.
In NSV can also be used DShKM tape, which has in fact a similar device, but different in detail (two hooks and T-axis instead of the 1st toe and cut with a jumper, bending, stretching into a groove instead of the knee-lock and ridges).
The barrel machine gun quick, it established a pen. The muzzle of the barrel is provided with a conical flash suppressor.
In an infantry version of NSV-12, 7 is used on the tripod machine design K.A.Barysheva — L.V.Stepanova. The index of the machine — 6T7. The machine allows firing from different positions and good adaptability to the position, including a variety of soil due to the presence on the legs folding machine plowshares (for Myagenko and medium soils) and folding fangs (hard ground). The machine is equipped with a spring-loaded shoulder rest with a through-neck for hands and a trigger with pistol grip fire control, trigger and trigger guard. When mounted on the lathe machine gun shoulder rest and trigger the machine guns are continuing, with all this trigger pusher machine to its impact on the fact the trigger gun.
In contrast, the machine gun to the ANC Kolesnikova, machine design Barishev-Stepanova to the machine gun NSV does not provide for the ability of conducting anti-aircraft fire. Because of this, the weight of the machine in relation to the machine Kolesnikova reduced almost 6 times and is 18 kg. For firing at air targets used special single-Installation of NSV. Index of installation — 6U6. It is armed with anti-aircraft red-dot sight and a separate ground gunpoint. Weight without guns — 55 kg, with a machine gun and ammunition — 92.5 kg. Ammunition of the anti-aircraft machine gun on the set — 70 rounds.
NSV machine gun on 6T7 infantry machine served as the usual caliber machine guns, crew of 2 persons: the gunner and assistant gunner. To transport the machine gun removed from the machine, and machine consists in traveling to the small size and can be carried on the shoulder straps behind the back rooms of calculation.
For weapons NSV-12, 7 DOSOV (long pillbox — the same as the old bunkers — long gun emplacements) used the installation 6U10 and 6U11. Machine gun on the installation itself is fixed in the embrasure dos along with the standard machine 6T7: gun can not be removed from the machine, but the machine legs folded back. This enables agile as needed to use the machine gun fire outside the building of the machine 6T7.

Modifications
The main application has received a modification NSVT (Tank, Index Grau — 6P17) as the zenith on tanks T-72, T-80, T-90 and later versions of the T-64 self-propelled artillery, and armored vehicles at various. In the 1990s, were armed with machine guns NCW several thousand Panssari-Sisu armored personnel carriers and armored Sisu NA-110, made in Finland for its own armed forces and military units from African countries under the auspices of the UN.
The tank was equipped with a machine gun version of the electric trigger — that's all the differences ended. Electric trigger was a primitive reel to the rod, assembled in a sealed dust-, gidrozaschischennom housing. Was attached to the back of the receiver, when power rod extends and put pressure on the trigger rod.

NSV heavy machine gun NSVT 12.7 "The Rock"

As an infantry machine gun NSV was used on several types of installations. More successful was the machine-Stepanova Barishev 6T7, the machine gun was called HCBC-12, 7 (Index Grau — 6P16), weighed 41 kg, was the main sights in all of this optical SPP production Novosibirsk optical-mechanical plant. There was also a series of night sights. Create machine and staffing HCBC performed at the factory in Vyatskie Glades. To pay off the energy of the mass of the shot gun is not enough, because the machine was equipped with 6T7 unusual shock, mounted on the front Soshnikova shovel, vkapyvaemovoy into the ground. With all this added to the weight of the machine gun weight of the machine. Rolling back this design was quite palpable that required to establish and shock absorber in the butt, mounted on the machine gun sight "went" together with him, so that the shooter inadvertently screwed up his eyes when shooting. Shooting was officially provided only in the prone position, often in the Army established gun for kneeling, for all that he desperately "goats" because the shock was located in a vertical position, neither of which read as shooting accuracy is not necessary. Gaza shooting at 6T7 was very limited anti-aircraft fire was impossible.
One of the main advantages of NSV — its versatility, in other words, the possibility of its use and ground and air targets. Versatility tried to use, but the settings for all that went terribly massive, languorous (one of them — 6U6 weighed four times as much of the gun), popular among the troops did not get.

NSV heavy machine gun NSVT 12.7 "The Rock"

Already in the years of independence of Kazakhstan at the plant in Uralsk designed and made a few hundred machines, are an attempt to embody the "universality" machine gun. For the base of the tank took the design installations, when a machine gun firing at moving the guides specific "bed." Tripod and bed were a separate design with quick-release, the sight mounted on the bed, allow the installation of a tripod for shooting prone and kneeling. There were no way to secure leads. In general, despite the dampness design accuracy is not af
fected, the shooter does not screw up one's eyes, allowing the fruits without annoying to watch for shooting, the impact of the return on his shoulder was still lower than when firing 6T7, factory arrows shown at the sites of the Ministry of Defence of Kazakhstan decent accuracy , frisky as a transfer of fire along the front, and depth. Machine gun on the machine received the title NSVP-12, 7, officially the Republic of Kazakhstan Ministry of Defense has taken it on board and purchased about hundreds of pieces.
At this time in Russia have decided to renounce the purchase of guns abroad, even in a friendly Kazakhstan. At the same time, starting with the initial creation of 'raw' drawings did not, at the factory Degtyareva practically designed a new gun, named "Kord". Retaining permanent landing sizes and ballistics for interchangeability with existing installations and machines, kovrovchane radically changed the scheme locking trunk.

Fighting application
The new gun is designed to engage lightly armored ton and group living targets of the enemy at a distance of up to 2000 m, gun emplacements, and low-flying air targets at slant ranges up to 1500 m Consume very powerful 12.7 × 108 mnogokaliberny patron, who had a whole palette of bullets for different purposes: B -32 (armor-piercing incendiary), BZT-44 (armor-piercing incendiary tracer) and MCH (incendiary instant offense).
First combat use of the NCW received in Afghanistan. The first time on both sides of a role in fighting perceived only modify the ANC (the Mujahideen used the ANC made in China). But in the second half of the 80s in the armed forces appeared and NSW. Its rapidly appreciated, its main feature was the ability to conduct aimed fire on the enemy, not allowing it to effective shooting distance from the machine. There are a huge number of photos of checkpoints, where 6T7 machine loaded with stones, sandbags to prevent his goat-jumping. Completing each gun optical sight, and in the version of night — and night sight, put their HCBC main "eyes" of the checkpoint.

NSV heavy machine gun NSVT 12.7 "The Rock"

More "loved" NCW was in both Chechen campaigns, among Chechens, he earned the nickname "pretty boy." There was a great deal of funny at first glance, "modifications" Tank "Cliff", which was easier to obtain, for the introduction of an infantry.
NSV-12, 7 and arming warships. Namely, there is a twin-turret sea tower plant "cliff-M", consisting of 2-NSV placed in a rotating tower closed. Right gun has the right pitch tape.

Tactical and technical characteristics:


Cartridge — 12.7 × 108 mm
Weight of machine gun without tape, kg — 25
Mass barrel kg — 9
Weight snapyazhennoy Tape Drives 50 patponov kg — 7.7
Weight patponnoy terminal box, snapyazhennoy patponami 50 kg — 11.1
Patpona mass, g — 123-137
Length of gun, mm — 1560
Length with gun elektpospuskom, mm — 1610
The length of the machine gun 6T7, mm — 1900
The height of the machine gun on 6T7, mm — 380
Number of grooves — 8
The initial velocity, m / s — 845
Muzzle energy bullets, J — 15815-17672
Fire modes — continuous
Rate of fire (techno skopostpelnost) in / min — 700-800
Battle skopostpelnost in / min — 80-100
Sighting range, m — 2000
Blank range at a target height of 2 m, m — 850
Thickness punctured armor at a distance of 500 m, mm — 16

Capacity tape cartridges:
— Infantry option — 50
— tank variant — 150

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