Selasa, 11 Juni 2013

senjata Sniper di dunia


RPA "Rangemaster" .50 caliber sniper rifle.
RPA "Range master" .50 caliber sniper rifle.
Image: RPA International Ltd

Caliber .50 BMG / 12.7x99
Operation manually operated bolt action
Barrel 812 mm (32")
Length (ready / folded) 1520 / 1230 mm (60" / 48")
Weight, w. bipod and scope 16.9 kg (37.3 lbs)
Feed Mechanism 5 rounds detachable box magazine
British rifle-making company RPA Precision Ltd (now RPA International Ltd) originally built indigenous target rifles, and entered "tactical rifle" market in 2001 with new 7.62mm "Range master" sniper rifle, based on proprietary RPA Quadlock® action, used in their match rifles. The 7.62mm "Range master" rifle was soon supplemented with long range anti-personnel .338Lapua version in 2004, and long range / anti-material .50 caliber version in 2005. According to the manufacturer, RPA "Range master"rifles are in active use with a significant number of police and security organizations across the world. With proper ammunition, all RPA "Range master" rifles are capable of constant sub-MOA accuracy.
RPA "Range master" sniper rifles are built around proprietary Quadlock® action,which features manually operated rotary bolt with four frontal radial lugs. Barrels are fluted for better heat dissipation, and threaded to accept a muzzle brake or silencer. Triggers are of two-stage type,fully adjustable, with ambidextrous manual safety conveniently located just above the trigger. Rifles are fed using detachable box magazines holding five rounds. Stock is of composite (aluminum+ polymer) design, with side-folding butt which is adjustable for length of pull. Unusual features of the RPA stock design are bolt channel, which also serves as the stock comb / cheek rest, and the fact that in emergency situations rifle can be fired with butt folded. RPA "Range master"sniper rifles are sold without any iron sights, and equipped with standardPicatinny rail on the receiver which can accept a wide variety of day or night sighting equipment. Two additional lengths of Pica tinny rail are installed on the for end. Other accessories include folding adjustable bi pod and adjustable mono pod, built into the butt stock.

Barrett Model M90 and M95 (USA)

 Barrett M90 rifle.
 Barrett M90 rifle.
 Barrett M95 rifle.
 Barrett M95 rifle.
 Barrett M95, another view.
 Barrett M95, another view.
image by: Bill Gritton

data for Barrett M95 rifle

Caliber: .50 BMG (12.7 x 99mm)
Operation: Bolt Action
Overall Length: 1143 mm
Barrel Length: 737 mm
Feed Device: 5 Round Detachable Box Magazine
Sights: 10X Telescopic
Weight: 9.98 kg empty, without scopeŃ™
Muzzle Velocity: 854 m/s (M33 Ball)
Expected accuracy: about 1 MOA or better with match grade ammunition
Maximum Effective Range: about 1800 meters (depending on the environment conditions and the target)

The M90 rifle was developed in 1990 by the American company Barrett Firearms co for those customers who want or needed a .50 caliber rifle but prefer a bolt action instead of the semi-automatic design, offered in the Barrett's' flagship model, M82A1. The new rifle also was lighter and some30 centimeters (12") shorter than the M82A1, and also about 30% less expensive (comparing current MSRP of M82A1 and M95). After initial experience with this rifle it was replaced in production in 1995 by the slightly upgradedM95 model rifle, which is still in production. It is used by civilian long range competition shooters across the world, and by various military and law enforcement forces. It is not so popular across the government users, unlike the Barrett M82A1. In the year 1999 the M95 won the US Army competition for XM-107.50 caliber sniper rifle, and was subsequently bought by US Army in small number for further research and testing. The Barrett website also announces that M95rifle is used for military and law enforcement applications in at least 15 other countries. Like the M82A1, the M95 primary application are anti-materiel and counter-sniper operations and explosive ordnance disposal.
M90 is a manually operated, bolt action rifle of bull pup layout. The rotating bolt has three massive lugs that locks directly into the barrel. The long fluted barrel is similar to one used in M82A1 rifle and has the same two chambers reactive muzzle brake. The receiver is made from stamped sheet steel and consists of two parts(upper and lower), connected by the push-pins. The detachable box magazine is shallower than one found on M82A1 rifles and holds only 5 rounds. The pistol handle ant the trigger are located just ahead of the magazine, the butt pad is attached directly to the receiver. M90 has no open iron sights, but features as cope mount on the top of the receiver. It is most commonly fitted with 10XLeupold M series telescope sights. M90 does not intended to be fired from the shoulder, and it has integral folding bi pod mounted on the front end of the lower receiver.
The M95 is an improved version of the M90. It featured pistol handle and the trigger unit moved forward for 1 inch (25 mm) for better clearance between the magazine and the pistol grip, and thus more comfortable handling and shooting. The bolt handle is slightly redesigned and bent down and to the rear. The barrel chamber is chrome plated for better extraction and corrosion resistance. There are also some minor improvements in the trigger /firing pin mechanism.


HK PSG-1. Left side view, with tripod rest.
HK PSG-1. Left side view, with tripod rest.
 Same rifle, right side view.
 Same rifle, right side view.
Close-up on the PSG-1 receiver. Note adjustable shoe on the trigger, adjustablecheekpiece, "silent bolt closing device" pushbutton just behind theejection port.
 Close-up on the PSG-1 receiver. Note adjustable shoe on the trigger, adjustablecheekpiece, "silent bolt closing device" push button just behind the ejection port.

Caliber: 7.62 x 51mm NATO (.308 Win)
Action: Semi-automatic, roller-delayed blow back
Barrel: 650 mm
Overall length: 1208 mm
Weight: 8.10 kg with scope and no magazine
Magazine: 5 or 20 round detachable box
Scope: Hendsoldt 6x42, 6 settings from 100 to 600 meters
Expected accuracy: Sub-1MOA with match grade ammunition

The PSG-1 sniper system (PrazisionsSchutzenGewehr, or "high-precision marksman's rifle"in English) had been developed by the German company Heckler - Koch by the mid-1980s as an ultimate police and counter-terror weapon. Some German elite law-enforcement groups, like GSG or KSK-9, participate in this development, and since its introduction the PSG-1 had been adopted by various police forces in Europe and Americas. It is way too heavy and somewhat too gentle for military use, so it never seen any military use. Instead, HK developed two more sniper weapons. The first, that actually preceded the PSG-1, was the G3-SG1, an accurizedand scope-fitted version of the basic G3 automatic rifle for German Army. And Ianthe mid-1980s HK also developed a derivative of the PSG-1, called MSG-90, for export military sales. The PSG-1 is still offered by the HK, and is one of the most expensive factory-made sniper rifles on the market, hitting the $10.000price tag in the basic package.
Technically, the PSG-1 is no more than a heavily modified G3 rifle. It features the same roller-delayed blow back action, derived from earlier CETME rifles, and the same stamped steel receiver with separate detachable trigger unit. The heavy barrel is precisely made by the cold hammer forging process with polygonal rifling for improved accuracy and longer life. Special trigger unit features semi-automatic only hammer group and the adjustable trigger with trigger pull of about 1.5 kg (3 lbs). The ergonomically shaped pistol grip features an adjustable palm stop. Plastic butt stock is also adjustable for height and for length of pull. Another non-typical feature of the PSG-1 is the "silent bolt closing device", actually similar to the forward assist, found on M16rifles. This is apparently to be used in situations where a complete silence must be maintained until the shot is fired. The devise is no more that apushbutton, located just behind the ejection port, and linked to the bolt carrier by the ratchet-like device. The rifle is fed using standard 20-rounds G3magazines or special 5-rounds magazines. There's no open (iron) sights on thePSG-1. Instead, it is fitted with the Hendsoldt 6X42 fixed power telescope sight with illuminated reticle. The scope has built-in range adjuster that works in ranges from 100 to 60 meters, so 600 meters is considered the maximum effective range. Most strangely, the PSG-1 had no integral bi pod. Instead, it is often used with the separate rest, mounted on the compact tripod.

CheyTac Long Range Rifle System  - Intervention sniper rifle (USA)

 CheyTac Intervention .408 caliber M100 sniper rifle.
 CheyTac Intervention .408 caliber M100 sniper rifle.
 CheyTac LRRS, including Intervention M200 rifle with scope, .408 CheyTac ammunition, andtactical ballistic computer.
 CheyTac LRRS, including Intervention M200 rifle with scope, .408 CheyTac ammunition, and tactical ballistic computer.
Close-up view on the receiver and controls of the CheyTac Intervention M200rifle. Note large carrying handle under the barrel sleeve, and the scope fittedwith IR night vision module and IR laser.
Close-up view on the receiver and controls of the CheyTac Intervention M200rifle. Note large carrying handle under the barrel sleeve, and the scope fitted with IR night vision module and IR laser.
CheyTac Intervention M200 rifle in the carrying case.
 CheyTac Intervention M200 rifle in the carrying case.
CheyTac Intervention M310 single shot Target / Law Enforcement rifle.
 CheyTac Intervention M310 single shot Target / Law Enforcement rifle.
.408 CheyTac cartridge (middle) compared to .50BMG (left) and .338Lapua (right).
 .408 CheyTac cartridge (middle) compared to .50BMG (left) and .338Lapua (right).

Caliber: .408 CheyTac
Operation: manually operated rotating bolt action
Barrel: 762 mm (30")
Weight: 12.3 kg
Length: 1400 mm (stock retracted), 1220 mm (stock collapsed)
Feed Mechanism: 5 rounds detachable box magazine

The entire idea behind the CheyTac LRRS (Long Range Rifle System) is to provide long range soft targetinterdiction (read: anti-personnel sniper) rifle package, with maximum effective range, but relatively compact and light. To achieve this goal, the professor John D. Taylor designed the .408CheyTac cartridge. Being mid-way in size between the mighty .50BMG and already established long-range favorite .338Lapua, the .408 features a streamlined bullet with advanced patented design. This design allows the standard 419 grain (27.15gram) bullet to retain its supersonic velocity at the ranges beyond 2000 meters (2200 yards). At the ranges beyond 700 meters the .408 bullet has more energy than the standard .50BMG ball bullet. The .408 cartridge also is lighter than.50BMG cartridge by about 1/3, and generates less recoil. 
The original CheyTacIntervention M100 rifle is based on the Wind runner .50 caliber take down rifle fromEDM Arms. Current Intervention M200 sniper rifles still are based on Windrunnerdesign, but with several modifications. The Long Range Rifle System also includes CheyTac tactical computer (commercial PDA with Cheetah ballistic software), Night force NXS 5.5-22X scope, and Kestrel 4000 wind/temperature/atmospheric pressure sensors, linked to the PDA. The Tactical Computer with sensors andinternal ballistic database provides all necessary data for long range fire.CheyTac papers state that the entire System is capable to deliver sub-Accuracy at the ranges of up to 2500 yards (2270 meters).
The Intervention M200is a manually operated, rotating bolt rifle. The retractable buttstock allowsfor adjustment of the length of pull, and can be fully collapsed for storage andtransportation. The barrel can be quickly removed for replacement, or storage and transportation. The butt contains integral real monopod, which is hinged,and can be folded up when not in use. The heavy, fluted barrel is free floated,and its rear part is enclosed by tubular shroud, which serves as a mount for integral folding bi pod and carrying handle. Barrel is provided with effective muzzle brake, which can be replaced with OPS INC suppressor (silencer). M200rifle is fed using detachable single stack magazines, which hold 5 rounds. Top of receiver is fitted with permanent Mil Std Pica tinny rail. Standard scope is Nightforce NXS 5.5-22X, which can be upgraded with AN/PVS-14 Night Vision module and AN/PEQ-2 IR laser. No iron sights are provided with M200 rifle.
CheyTacAssociates also offers a less expensive, non-take down single shot rifle in .408caliber, the Intervention M310. This bolt action rifle with adjustable polymer stock is suitable for long range sport shooting, as well as for police long range snipers.
data source: CheyTac Associates Technical White Papers, 2001-2003, and CheyTac promotional literature.

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