PKMT
As the PK was adopted with the PKT (Index 6P7) tank machine gun and the PKB (6B10) armored personnel carrier machine gun, so together with the PKM appeared the PKMT (6P7M) tank machine gun and the PKMB (6P10M) armored personnel carrier machine gun. The tank machine gun features a more heavy barrel that permits to deliver more intensive fire. Its gas-regulator operates on the principle of changing the cross-section of the gas-bleeder and not on the principle of gases exhaust as was the case with the PK and PKM machine guns in an effort to prevent extra gas pollution in the combat compartment of the tank. The
PKMT does not have the sighting aids of its own, the operating handle and the stock, the appearance of the receiver is changed. The spring of the guiding tube of a piston rod removes the gap or the clearance between the tube and the receiver. The PKMT is equipped with an electric trigger mechanism. The tank machine gun is employed as the coaxial and the course weapon on the remotely controlled mounts.
The PKMT was manufactured at the Kovrov Mechanical Plant and the Zlataust Machine-Building Plant.
The PKMT weighs without ammunition load 11.705 kg.
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PKM-PKMS
which were developed later on the PKB machine gun intended for armored personnel carriers and the PKT machine gun intended for tanks. In 1969 the PKM (6P6) modernized machine gun with reduced weight by 1.5 kg and a number of changes: the ribs of the barrel were removed, flash suppressor, operating handle, buttplate and trigger guard were changed while the receiver cover was reinforced and introduced the folded shoulder rest.
The machine gun features the rapidly removed barrel, it is a gas-operated weapon with the gas-regulator and the barrel locked by the bolt rotation.
The operating handle is arranged to the right and remains stationary during the fire. The firing mechanism intended only for automatic mode of fire. The fire is delivered from the rear sear. The thumb safety locks the trigger.
The machine gun is fed from the cartridge-belt activated by the lever mechanism located to the right. The feeding of cartridges from the belt link is not straight. The ports of the receiver and the mag¬azine are covered by the spring-actuated shields.
The curve-slide sight is provided with a device of lateral corrections.
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RPK-74M
After creation of the AK-74M assault rifle at the «Izhmash», the Vyatsko-Polyansky Machine-Building Plant «Molot» had con¬ducted the proper updating of the RPK-74 light machine gun up to the level of the P.PK-74M light machine gun (Index 6P39).
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RPK-74 Kalashnikov
In 1974 the 5.45 mm assault Titles together with the RPK-74 (Index 6P18) light machine guns with unremoved stock and RPKS-74 with the folded stock were adopted for service.
The design differences from the AK-74 are similar to the differences of the RPK from the AKM. The new elements hap¬pened to be a muzzle device and magazine.
The slit flash suppressor is attached to the muzzle of a barrel. The decreased recoil energy permitted to enhance by a factor of about 1.5 the consistency of fire as compared to the RPK. For the RPK-74 and RPKS-74 was adopted one 45-round box magazine. The disk magazine for the RPK-74 was discarded on production-eco¬nomic reasons.
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RPK Kalashnikov
The very idea of unification of the small arms based on a singular was probed in the USSR earlier than it was done in other coun¬tries and implemented at a more full extent. In 1961 the RPK (Kalashnikov light machine gun, Index 6P2) developed on the bases of the AKM assault rifle was adopted for service.
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ASVK
Firing ASVK sniper rifle
Designers of the Kovrov Plant named after V.A. Degtyarev E.V. Zhuravlev, M.Yu. Kutchin and V.I. Negrulenko have developed on the «bull pup» design con¬figuration the 12.7 mm magazine sniper rifle SVN-98. Then this rifle was named KSVK («Kovrov large caliber sniper rifle») and, at last, ASVK («army large caliber sniper rifle»). The free sliding barrel was manufac¬tured via a cold forging and outfitted
Specifications with the recoil compensator or a device combining functions of a muzzle brake and flash suppresor. The bolt is of a longitudinally sliding type with an oper¬ating handle located in front of the trig¬ger guard. The heavy barrel, rugged receiver, and the manual reloading enhance the accuracy of fire. The oper¬ating handle is located on the right side. The thumb safety located on the right side of the receiver also serves as a fixator catch of its port.
The shoulder rest is provided with the elastic shock absorber. The unad-justable «cheek» is rigidly mounted on the receiver. The bipod is connected to the underbarrel rod.
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OSV-96
In 1994 the KB Instrument Design Bureau had offered the 12.7 mm V-94 experimental gas-operated unit ritle with its barrel bore locked by a rotating bolt. This rifle is intended to annihilate a hostile manpower rigged with individual protection armored means, light armored hardware, counter-sniper warfare, and knocking out hostile hardware.
A comparatively high recoil effect of the powerful cartridge is being absorbed by the muzzle break of reactive action (in doing so, the exhausted gases don’t exert additional pressure on the shooter) and buffer effect of the buttplate of the wooden buttstock. The operational pistol grip is made of plastic. The operating handle is located to the right. The rifle is fed from a 5-round straight box magazine. One of the problems of the large caliber rifles is their length. The V-94 was designed as a folded version, in
portable state the barrel is hinged rearward to the right, in doing so, the breech plate face and receiver are covered to prevent them from pollution by a special device. In similar state the rifle can be easily carried with hands and stowed in transport means.
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OTs-48
The high reputation of the Model 1891 Mosin rifle made designers of the TsKIB SOO to convert it into the most recent «sniper» rifle. Thus, made its advent the OTs-48K magazine sniper rifle with the barrel and locking unit bearing strong resemblance to the Model 1891/30 Mosin rifle.
The free sliding barrel is assembled with a short flash suppressor and a front sight post. The sealing of the barrel bore is ensured by the sliding bolt with a bent downward operating handle. The striker is assembled in the bolt with a combat cock and the protruding behind the «hammer».
The firing mechanism is developed in a more smooth and easy way for precise fire than is the case with its prototype. The wooden buttstock features an adjusted buttplate, «cheek», and device for a hinged bipod near the front end of a fore grip.
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MTs-116M
At the TsKIB SOO was developed a sniper version of the single load 7.62 mm MTs-116 rifle. It’s barrel bore is sealed by the free «sliding» rotating bolt with two locking lugs. The curved handle of the bolt is located over the trigger guard during the barrel locking.
The striking mechanism is assembled in the bolt, the striker is cocked during the unlocking, the tail of the striker serves as an indicator of the cocked state. The releasing mechanism is assembled on a separate base and is being regulated in conformity with a force pull of the trigger from 1.5 to 2.55 kgf, and the length of its travel (from 0.5 to 2 mm). The sighting aids are mounted on detachable brackets.
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SV-98
Designer from the «lzmash» V. Slronsky has developed the SV-98 sniper rifle derived Irom the «Rekord» sport rifle chambered for the 7.62x54R-sniper 7N1 or sport «Exfra»
cartridges.
The free sliding barrel was produced via cold forging and underwent honing and to enhance consistency of fire its tube was not chromed. The longitudinally sliding rotating bolt features three locking lugs and a down¬ward deflected operating handle. The increas¬ing of the trigger force pull is being adjusted within 1.5-2 kgf. The thumb safety lever is located behind the bolt handle and locks the sear, trigger, and the bolt.
The rifle is fed from a 10-round remov¬able dual-row box magazine that is not pro¬truding from its seat. During its mounting a special vertical rod fixes the magazine’s cor¬rect position.
The bracket of the optical sight is mount¬ed on the receiver. The main sight is a pan-cratic 1P69 type 3-10×42 sight, the X7-PKS-07 sight may be also mounted. There are also available mechanical sighting aids. Ten-shot series fired at a range of 300 meters results in 5-7 cm deflection hit.
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