CB-98 (GRAU index - 6V10) - Russian stores sniper rifle, It was developed by a team of NGO "Izhmash" (now – "Concern Kalashnikov") under the leadership of Vladimir Stronsky in 1998-2000 was based Record-CISM sports rifle. The weapon is designed for high-precision destruction of enemy personnel at ranges up to 1000 m. AT 2013 by weapons has undergone minor modifications.
CB-98 – video
AT 2013-2014 year on the basis of sporting rifle “Record-338” and based on the experience, obtained when creating CB-98 and CB-prototype-338 98m, It was developed sniper rifle SV-338 chambered for larger caliber, which is designed to destroy enemy personnel, including a secure means of personal body armor at ranges up to 1500 m.
Solid cylindrical barrel is made by cold reduction, its outer surface is machined in order to avoid adversely affecting the accuracy of.
The barrel bore and chamber are not chrome plated in order to achieve the best accuracy of fire (since there is a reduction plating precision obtained the inner profile of the barrel and, Consequently, deterioration of accuracy). The downside is that, generating resource trunk without chrome plating is somewhat reduced, in this case, the figure is 3000 shots, and besides, the barrel in such technologies requires more careful attention to itself in terms of maintenance / cleaning.
On the muzzle muzzle brake mounted compensator or a tactical silencer. If this is not necessary, screwed onto the barrel the protective sleeve stub. The peculiarity of this kind of unusual in the bush in the, what, thanks to the particular thread, it creates a certain tension on the muzzle, which in turn improves the accuracy of fire. Above the barrel can be attached protivomirazhnaya tape.
7,62mm sniper rifle SV-98 in the competition for sniping, dedicated to the celebration of the Day of gunsmith
A very original solution rifle SV-98 is a structural design of mounting assembly shop: shop in front of the mounted on a special rack, pressed into the receiver. A rack mounted with a spring latch, which, when engaged with the store joining metal bushing, zaarmirovannoy store opening in the housing and tightly draw in the store itself to the receiver. This provides a simple, stable and reliable fastening of the store to the rifle.
The bottom surface of the receiver, which she laid on the bed, It has special diagonal notch, intersecting itself crosswise. The main function of this incision is, that during installation of the box with the barrel, it using a special connecting material securely attaches his rifle in the groove bed, forming a substantially monolithic connection receiver-bolt group with solid lodges.
Besides, from below, on the receiver, There is a special support protrusion, which also provides a stable position pieces arms relative to each other.
In this way, the output will get the rifle laying system, wherein during normal tightening the two fastening screws (one in the above-mentioned projection, and the other in the shank of the box), It provides the ability to achieve a sufficiently high accuracy of fire, When each protrusion is in the receiver “its” hole on the bed.
Weapon operates as a rotating bolt with three symmetrically arranged lugs, coming into the complementary abutment in the receiver and providing a firm locking of the bore when fired. Locking bolt by turning the handle by an angle of 60 °.
Lower combat shutter protrusion, as Mosin rifle mod. 1891/30 city, He plays the role of loading rod cartridge into the chamber. Problem, famous Yeshe Sergei Ivanovich Mosin and the decision on his rifle-cut-off reflector, in SV-98 is very simply solved - by vraschayusheysya strips, mounted on cylindrical portions of the shutter.
Strap adapted to close the shutter rammer, and after passing them ammunition, are in store, He continues to urge the cartridges thereby not allowing them to rise under the action of the feeding mechanism and prevent movement of the shutter when opening utykaniem in rammer. To strip not tracked movement of the shutter when unlocking-locking, it is connected to the gate of the two rings, entering into the grooves on the cylindrical portions of the shutter, and, thank them, can independently rotate relative to the shutter, remaining in the lower groove of the box.
Ejector L-shaped, rocker type, Located in the upper abutment and the shutter rotates under the action of springs on a rigidly fixed axis. Reflector rod type (like in the famous German 7,92 mm MG-42 machine gun uniform) It will mix freely in a hole in the gate, its stroke is limited by means of a transverse pin, zapressovannogo in prison. The opening for the reflector cup comes in the shutter and located opposite the ejector.
The hammer with striker cocked by the spiral, located at the gate. They are inside the shutter together with the mainspring. The hammer cocked configured to interact with the counter surface sear. At the back end has a shutter cocking pointer, which is a spring-loaded rod, protrude beyond the tip with a cocked striker.
Trigger SV-98 rifle is inherited from sporting rifles "Record" and ensures stable performance descent and a wide range of variation (general course 1.5-2 mm, trigger pull 1,0-1,5 kgf. prevention effort 0,5-0.7 kgf).
The principle of operation of the trigger mechanism – the so-called "samovyzhim", which dominates in the construction of triggers almost all sporting rifles as providing independent descent characteristics (trigger pull, idle and stroke) from the efforts of the mainspring.
The operation of such a mechanism is, that sear with its spring, It can be "squeezed" pressure, exerted by the mainspring cocked. Until the moment of the shot, sear from moving maintains a structural element (in this case, the sear lever), and pressing the trigger this element is removed from contact with the sear, allowing it to move with the movement path of the striker.
The only structural difference of the trigger mechanism of sporting embodiment consists of introducing a fuse structure rifles. A two-position safety is located in the receiver, closer to its tail section, on the right side. Fuse vrashaetsya journalled in the receiver and has two protrusions. In the protection position, the upper lip comes to the groove on its gate, and blocks a stirred, and the bottom rises under the sear and gives him mixed up and the trigger, eliminating the possibility of the shot.
Double row magazine capacity 10 cartridges is made of glass fiber reinforced polyamide with metal liners, which works on the principle seriously it differs from the common structures in the world. The usual prismatic or leaf spring is replaced by the lever member, consisting of four arms, interconnected axes mutually centered. Pairs are connected to each other in the ends of the levers. Obtained kind of linkage chain, wherein the base of each pair on the same axes mounted torsion spring, who seek to loosen the levers. Lower arms along radii formed on their ends, It rests on the magazine cover, and the upper – in a metal feeder, which the, in its turn, under the action of the lever system presses the cartridges to the flap.
The main advantage of such a system - in its compactness. When folded, the arm member has a height of just 8 mm. Ordinary prismatic spring is not possible to get such a height without loosing state. This design allowed the store to make a compact height (170 mm) and completely eliminate his circuit box. The cartridges in the store, staggered, are fed into the chamber without rebuilding.
Upcoming sights are fly in namushnike steering pillar and, telescopic sight mounted on the guide type Picatinny rail in the upper surface of the receiver.
On the right side of the bed there is a folding handle for carrying weapons. Rifle butt is adjustable in length, the height of the palm cheeks, and also provided with a third sliding support.
AT 2013 , the rifle has undergone a minimum modernization: instead of high-multilayer lodges aircraft plywood, weapons received a box of aluminum alloys. Aluminum alloys are more stable under harsh temperature changes, thus replacing the lodge had a positive effect on the accuracy of shooting in extreme conditions of warfare. Also, weapons received additional Picatinny rail and tactical silencer new design, further reduces the sound of the shot.
As shown by tests, patterning upgraded SV-98 on the results of a series of 10 shots target ammunition is within 0,5 MOA and better, and Russian sniper cartridge type SC-8 – within 1 MOA (MOA).
Further, it is planned to optimize the receiver of the rifle in order to improve the maintainability of weapons.
The model CB-338 sniper rifle is possible to observe an extended Picatinny rail, modern versatile kit with ventilation and mounting holes and detachable butt.
Sniper rifle SV-98 in Syria
Sniper rifle NE-338
– at 2000 , the prototype rifle was created ST-98m-338 chambered .338 Lapua Magnum
– at 2010 year launched a limited-edition release of civilian rifle modified under the name KO-13 "Rekord" (the trunk is no mount for muffler).
– at 2013 , the "Izhmash" upgraded rifle. Unlike its predecessor, upgraded SV-98 has a new ergonomic bed of duralumin alloy.
– at 2014 year at the Eurosatory arms exhibition in Paris in 2014, was presented demonstration of yet another embodiment of the SV-98 - to the relief of skeletal-type bed, Adjustable butt of colored plastic, folding bipod and optical sight DH 3-12h50 with removable thermal attachment "Daedalus-TA2 '
– Russia: Defense is used by special units, Ministry of Justice, MIA, FSO, FSB. December 2012 , I was placed a purchase order 49 PC. for Special Forces Drug Control Service
– Armenia: purchased 52 PC. at 2010 year
Performance characteristics of the SV-98
– Adopted: 2003
– Constructor: AT. Stronsky
– Manufacturer: Izhmash
– years of production: 2004 - present.
– 6,2 kg
– Length, mm: 1270 mm
– barrel length, mm: 650 mm
– 7,62× 54 mm R;
– 7,62× 51 mm NATO
– .338 Lapua Magnum
– 7,62 mm; .338
Rate of SV-98
– 10 rounds / min
Muzzle velocity SV-98
– 820-860 m / s
Firing range SV-98
– 1000 m (sighting)
Magazine capacity CB-98
– 10 rounds, otomny the box
Aim: open front sight and adjustable rear sight