4/24/2010

Sejarah Tentang Dragunnov
(Bahasa Inggris)



Dragunov SVD was designed not as a "standard" sniper rifle in its Western meaning of the term. In fact, main role of the SVD in Soviet / Russian Army is to extend effective range of fire of every infantry squad up to about 600 meters and to provide special fire support. SVD is a lightweight and quite accurate (for it's class) rifle, cabable of semi-auto fire. First request for new sniper rifle was issued in 1958. In 1963 SVD (Snaiperskaya Vintovka Dragunova, or Dragunov Sniper Rifle) was accepted by Soviet Military. SVD can use any kind of standard 7.62x54R ammo, but primary round is specially developed for SVD sniper-grade cartridge with steel-core bullet. Every infantry squad in the Russian (Soviet) army had one man with SVD.
SVD rifle is extremely reliable in all conditions, and designed for heavy use. It has backup adjustable iron sights as a standard option, as well as a bayonet mount (standard AK-47 bayonet type).
Latest modernization incorporate rugged polymer stock. Also, for mounted and airborne troops a special variant was developed with folding buttsock and shortened barrel (590 mm). New flash hider/muzzle brake also installed.

It must be noted that several countries produced SVD copies or look-alikes. Of those, the "true" clones (rifles that have similar internal design) are Iraqui Al Kadesih rifle and Chinese Type 85 (in 7,62x54R) and NDM-86 (in 7,62x51 NATO). Others, such as Romanian Romak FPK or Yugoslavian Zastava M76, are only look-alikes as their internal design is different and usually based on Kalsshnikov AK assault rifle. Russia also produces a civilan version of the SVD, known as "Tigr" (Tiger), in 7,62x54R and 7,62x51 (.308 Win). This usually has shorter barrel, although it is available in several different versions. Older hunting version of the SVD, the "Medved" (Bear) is no longer produced and is quite scarce.

Dragunov SVD is gas-operated, semi-automatic rifle. It uses short-stroke gas piston, and gas chamber has a two-position manual gas regulator. Barrel is locked by rotating bolt with three lugs. Receiver is machined from steel block. The safety is somewhat reminiscent in its appearance to that of Kalashnikov AK assault rifle, although internal design of the trigger unit is different, and there's no provisions for full automatic fire. Trigger unit is assembled on a separate removable base that also incorporates a trigger guard. The second, smaller lever, located on the right side of receiver behind the safety, is a receiver cover catch, and is sued to disassemble the gun. Standard furniture includes a skeletonized wooden butt and a removable wooden handguard. Late production models may feature polymer handguards and, sometimes, polymer skeletonized butt. The short SVD-S rifle is fitted with separate pistol grip, made of plastic, and a side-folding metallic butt. All SVD rifles are fitted with adjustable open sights, as well as proprietary side rail mount, which will accept telescopic or IR sights on quick-detachable mounts. Standard telescope sight is the 4X fixed magnification PSO-1 with range-finding reticle. SVD rifles also are issued with carrying sling, cleaning kit and other accessories. A standard AK-type bayonet can be installed on the barrel.
Sejarah Tentang Kriss Super V.
(Maap Bahasa Inggris)






Kriss Super V™ submachine gun is an interesting experimental weapon which is currently (spring 2007) under advanced stages of development. The name Kriss comes from Indonesian sword or large knife with flame-like blade. This weapon is intended to provide operators with improved control over accuracy and bullet dispersion, in both semi-automatic and full automatic modes, while firing hard-hitting .45 ACP ammunition. The overall design also permits the Kriss to be fired single-handedly when required by tactical situations and with adequate accuracy. To achieve those goals, Kriss Super V™ submachine gun employs three basic solutions. First is to place the axis of the recoil force in line with the firing hand, thus minimizing the muzzle climbing. Such system was previously employed in Olympic-class small-bore pistol developed in Russia and was subsequently banned from international ISU competitions because of extremely high accuracy, which made completion "unfair". The second solution is probably more novel, as it uses a laterally moving weight, attached to the breechblock (bolt), to divert recoil forces to the bottom direction. The third solution is actually a part of the second system, and it employs a variable-angle track in the weight (#510 on diagram above), which puts a breechblock at a mechanical disadvantage during earlier stages of recoil, thus slowing down the movement of the bolt while pressure in the barrel is still high. As a result of these measures, Kriss Super V™ submachine gun has significantly less muzzle climb when compared to most modern submachine guns. This results in better accuracy and better grouping of hits on target, providing operators with greater lethality during short-range and short-time encounters.

According to the manufacturer, the Transformational Defense Industries, Inc. (TDI), a wholly-owned US subsidiary of the Gamma Industries (Switzerland), the Super V™ system also can be used for submachine guns in other calibers (i.e. 9mm Luger and .40SW). TDI is also developing civilian-legal semiautomatic carbines with 16" (405 mm) barrels. To date (April 2007) TDI has manufactured four prototypes of the Kriss Super V™ submachine guns, which displayed very promising results during numerous live-fire tests. The development of selective-fired version of Kriss Super V™ weapon is conducted in cooperation with US Army ARDEC and several undisclosed industry partners.

Kriss Super V™ submachine gun is delayed blowback operated, selectively fired submachine gun. It fires from closed bolt for enhanced first-shot accuracy. Fire control group is situated above the barrel. Very light bolt is connected to the vertically sliding weight, which is located within a polymer housing in front of the pistol grip. In one of tested configurations additional Enidine hydraulic buffer assembly is employed to further decrease rate of fire by about 200 rpm and to lower weight of the moving parts. Folding cocking handle is located on the left side of the gun, and does not move when gun is fired. Firing controls include ambidextrous fire mode selector switch, located about the middle of the upper receiver / trigger mechanism housing, which provides full auto fire, 2-round bursts and semi-automatic fie, and a separate ambidextrous manual safety switch, which is conveniently located just above the pistol grip. Feed is from 13-round Glock Model 21 magazines, but a larger capacity, 28-round magazine is currently in development. Magazine is inserted into a housing, located in front of the pistol grip. Kriss Super V™ submachine gun is fitted with two Picatinny type rails, one above the receiver and another below the barrel, and two additional rails can be installed on either side of the lower receiver, providing ample mounting space for all necessary accessories, such as laser-aiming modules or tactical flashlights. The upper rail can accept a variety of sighting devices, such as open or red-dot sights; lower rail is usually fitted with vertical foregrip. On latest prototype, the front of the upper receiver / trigger housing above the barrel is hollow and shaped as to accept tactical flashlight. A side-folding polymer buttstock is provided for more accurate shooting.
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4/21/2010

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