AWM

 The Accuracy International AWM (Arctic Warfare Magnum) is a bolt-action sniper rifle manufactured by Accuracy International designed for magnum rifle cartridge chamberings. The Accuracy International AWM is also unofficially known as the AWSM (Arctic Warfare Super Magnum), which typically denotes AWM rifles chambered in .338 Lapua Magnum.

In September 2012 Accuracy International announced that the .338 Lapua Magnum AWM rifle was phased out and replaced by the Accuracy International AXMC sniper rifle.

Arctic Warfare Magnum System
The Accuracy International AWM rifle is a variant of the British Accuracy International Arctic Warfare (AW) rifle that was the basis of a family of sniper rifles using the Arctic Warfare name. As such the design details of the AWM variant are similar to the ones found in the basic AW rifle system. Compared to the AW, the AWM has a longer bolt to accommodate dimensionally larger magnum-length cartridges such as the .300 Winchester Magnum and the .338 Lapua Magnum. The bolt head, locking ring, and extractor and magazines were also revised to work with the increased size and operating pressures of magnum rifle cartridges.

The AWM features a detachable single stack removable box magazine which holds five rounds. The normal cartridges for this rifle, and the ones which have been accepted by NATO for use in AWM rifles, are .300 Winchester Magnum and .338 Lapua Magnum.

Muzzle brakes are fitted to reduce recoil, jump and flash and act as a base for optional iron sights and suppressors.

Normally, the AWMs are outfitted with a Schmidt & Bender PM II 10×42/MILITARY MK II 10×42 telescopic sight with 10× fixed power of magnification. However, a Schmidt & Bender PM II/MILITARY MK II with variable magnification of either 3–12×50, 4–16×50 or 5–25×56 can be used if the operator wants more flexibility to shoot at varying ranges, or when a wide field of view is required. Accuracy International actively promotes fitting the German made Schmidt & Bender PM II/MILITARY MK II product line as sighting components on their rifles, which is rare for a rifle manufacturer. The German and Russian Army preferred a telescopic sight made by Zeiss over Accuracy International's preference.

The AWM rifle is normally supplied in a metal transit case together with a telescopic sight, mount, butt spacers, bipod, spare magazines, sling, cleaning and tool kits.

Military adoption
British Armed Forces
The British Armed Forces adopted the AWM rifle chambered in .338 Lapua Magnum as the L115A1 Long Range Rifle. The British L115A1 rifles are outfitted with Schmidt & Bender 3-12×50 PM II/MILITARY MKII 3-12×50 0.1 MIL RAD telescopic sights. The L115A1 is in service with the Royal Marines, British Army and RAF Regiment in Afghanistan and Iraq.

In November 2007 the British Ministry of Defence (MOD) announced that their snipers in the Army, Royal Marines and RAF Regiment were to get a new rifle. Accuracy International would supply 580 L115A3 Long Range Rifles with day telescopic sights. The L115A3 is being supplied as part of a broader Sniper System Improvement Programme (SSIP) program which also includes night sights, spotting scopes, laser range finders and tripods.[16] The L115A3 rifle was first deployed to Afghanistan in May 2008. Some features of the improved L115A3 include:

    Schmidt & Bender 5-25×56 PM II LP/MILITARY MKII 5-25×56 0.1 MIL RAD parallax, illumination, double turn telescopic sights;
    Suppressors to reduce the flash and noise signature;
    Folding stocks for better carrying in a backpack;
    Adjustable cheek pieces for more comfort and better eye alignment with the telescopic sight;
    Butt spikes (monopods) to aid stability during firing;
    Adjustable bipods, which differ from the original Accuracy International bipod;
    5-round box magazines.

The MOD claims a muzzle velocity of 936 m/s (3,071 ft/s) for the L115A3

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CheyTac M200 Intervention

The CheyTac Intervention is an American bolt-action sniper rifle manufactured by CheyTac LLC, which can also be classified as an anti-materiel rifle. It is fed by a 7-round detachable single-stack magazine (an optional 5-round magazine is also available). It is specifically chambered in either .408 Chey Tac or .375 Chey Tac ammunition. CheyTac LLC states that the system is capable of delivering sub-MOA accuracy at ranges of up to 2,500 yd (2,286 m), one of the longest ranges of all modern-day sniper rifles. It is based on the EDM Arms Windrunner.

Design details
The CheyTac M200 Intervention is a manually operated, rotating bolt sniper rifle. It features a Picatinny rail on the top of its receiver for mounting various optics/scopes.

Cartridge
The M200 Intervention is chambered in either the .408 CheyTac or .375 CheyTac cartridge. CheyTac specially developed the .408 CheyTac/.375 CheyTac cartridge for long-range use. The cartridge is optimized for accuracy by a balance of the rotational and linear drag, which reduces yaw and precession, and keeps the tip of the projectile pointed along the trajectory.

Barrel
The M200 Intervention uses a free floating heavy-fluted barrel, which can be quickly removed for replacement or storage and transportation, and the shroud at the rear serves as a mount for an integral folding bipod and a carrying handle.

To achieve balanced flight the rifling twist rate for the .408 CheyTac chambering was chosen at 330.2 mm (1:13 in), with eight 0.4080 in diameter grooves, 0.4010 in diameter bore and a 0.050" land width, square cut, with no taper. The later .375 CheyTac round, developed from the .408 CheyTac, uses a 292 mm (1:11.5 in) rifling twist rate.

Accessories
Vector laser range finder binoculars.The M200 Intervention comes with a portable advanced ballistic computer, laser rangefinder binoculars and meteorological and environmental sensor package. All these components, together with the sniper rifle, are part of the CheyTac Long Range Sniper System (LRRS) and are linked to the ballistic computer. It provides all necessary data and calculations for accurate long range firing.

    Advanced Ballistic Computer - The CheyTac Advanced Ballistic Computer (ABC) System software package uses tabulated bullet flight data derived from high speed Doppler radar test sessions, and mathematical models to predict ballistic trajectory. It runs on Windows Mobile 2003 and receives input from the Kestrel handheld weather station and Vector IV laser rangefinder binoculars. However, much like other ballistic prediction software, when rounds are used for which no Doppler Radar-established bullet flight data is known, the ABC System relies solely on mathematical ballistic models like all other ballistic prediction computer programs. Printed data tables are available for manual use. Without computer support the effectiveness of some long-range shooters could be severely reduced, since they may rely heavily on computer support to obtain accurate ballistic estimates.
    Meteorological and environmental sensor package - The KESTREL 4000 (or, 4500 NV) meteorological and environmental sensor package measures the wind speed, air temperature, air pressure, relative humidity, wind chill, and dew point. The KESTREL 4500 NV model is compatible with night vision devices.
    Laser rangefinder - The Vector IV mil spec laser rangefinder measures distances up to 6,000 m (6,561.7 yd), and houses a digital compass and class 1 eye safe filters.

 Accuracy
CheyTac states that "the CheyTac LRRS is a solid anti-personnel system to 2,000 yd (1,829 m)." The primary intent of the .408 is as an extreme range anti-personnel system. Groups of 7 to 9 in (18 to 23 cm) at 1,000 yd (914 m), 10 in (25 cm) at 1,500 yd (1,372 m) and 15 in (38 cm) at 2,000 yd (1,829 m) have been consistently obtained.
Groups of 19 in (48 cm) at 2,100 yd (1,920 m) and 29 in (74 cm) at 2,400 yd (2,200 m) have also been obtained. All groups that are up to 3,000 yd (2,743 m) are less than 1 minute of angle for vertical dispersion.

Variants
The CheyTac Intervention comes in several variants:
-M200 (29 in (737 mm) barrel length)
-M200 Carbine (Now out of production)    M200 CIV (Civilian Variant)
-M200 RK[citation needed]
-M310 (Single shot and repeater sub-variants all with 29 in (737 mm) barrel length)
-M310 R (Repeater)[citation needed]
-M325 (Single shot, repeater and tactical sub-variants all with 28 in (711 mm) barrel length)

The main capability differences between the different variants are governed by barrel length which
determines the obtainable muzzle velocity. Higher muzzle velocity extends the effective range of a rifle, everything else being equal. The M200 and the M200 Carbine are and were limited to official customers like military forces and come with a detachable box magazine and a telescopic stock, whilst the current (2013) other variants have a glass-fiber fixed McMillan A5 stock and are available for the general public.

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Sniper Dragunov

The Dragunov Rifle (Russian: Снайперская винтовка Драгунова, Snayperskaya Vintovka Dragunova, abbreviated as SVD), is a semi-automatic rifle designed by Evgeniy Fedorovich Dragunov in the Soviet Union from 1958 to 1963. This rifle was the first rifle made specifically for shooters and commonly found in the former Eastern Bloc countries, the Soviet Union, the Middle East and other countries that are well connected with the Soviet Union / Russia such as India, Vietnam and Venezuela. The rifle is also produced locally in India, China, and Iran.

History
In the 1950s, the Soviet Union military was aware of the need for accurate rifles to be used at the platoon level. And in 1958 a tender was opened among Soviet arms makers to make this new rifle. The winning bidder above is a rifle designed team led by Evgeniy Fedorovich Dragunov. In 1963, the SVD was officially used by the Soviet Army.

Modernization
SVD initially has furniture (butt, rear grip, and front grip) made of laminated wood. This laminating layer in addition to make it look better, also to protect the wood coated. But this has a weakness if the enemy has night vision. SVD wood turns bright yellow when viewed through night vision binoculars.

Current SVDs are made with black polymers to reduce weight and avoid the above flaws. In the 1990s, IZhMASh also modified the inside of the SVD, to make it stronger and to prepare the SVD to be exported in a variety of other calibers. 

UsageIn Soviet times, each team was given one SVD. SVD-equipped soldiers are usually given special training to wear this rifle. These soldiers move in tandem with his team and are meant to add their range of up to 600 meters. Without SVD, the effective distance of the infantry team is only up to 300 meters, due to the smallness of the AK-47 range. So judging by its role, technically SVD is not a sniper rifle, but a sniper rifle.
Designed to extend the range of the squad range, this rifle remains strong and resilient. This is evident from the place for bayonet installation, as well as a backup iron shot when the telescope's viewfinder is damaged. The reliability of these rifles is still recognized, and these rifles are still used in the Russian Armed Forces and Russian law enforcement units.
The Soviet-made light weapons are generally well-known for being very durable, as evidenced by the large number of widely used SVDs and the long "career". This rifle is used in many conflicts around the world, including the Vietnam War, Chechnya, Gulf War, Iraq War, until the Libyan Conflict.

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