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Monday 20 January 2014

The Dragunov sniper rifle

The Dragunov sniper rifle (formal Russian: Снайперская Винтовка системы Драгунова образца 1963 года Snayperskaya Vintovka sistem'y Dragunova obraz'tsa 1963 goda (SVD-63), officially "Sniper Rifle, System of Dragunov, Model of the Year 1963") is a semi-automatic special application sniper rifle/designated marksman rifle chambered in 7.62×54mmR and developed in the Soviet Union.
The Dragunov was designed as a squad support weapon since, according to Soviet and Soviet-derived military doctrines, the long-range engagement ability was lost to ordinary troops when submachine guns and assault rifles (which are optimized for close-range and medium-range, rapid-fire combat) were adopted. For that reason, it was originally named Самозарядная Винтовка системы Драгунова образца 1963 года "Self-Loading Rifle, System of Dragunov, Model of the Year 1963."
It was selected as the winner of a contest that included three competing designs: by Sergei Simonov, Aleksandr Konstantinov and Yevgeny Dragunov. Extensive field testing of the rifles conducted in a wide range of environmental conditions resulted in Dragunov’s proposal being accepted into service in 1963. An initial pre-production batch consisting of 200 rifles was assembled for evaluation purposes, and from 1964 serial production was carried out by Izhmash.

The Dragunov is a semi-automatic gas-operated rifle with a short-stroke gas-piston system. The barrel breech is locked through a rotating bolt (left rotation) and uses three locking lugs to engage corresponding locking recesses in the barrel extension. The rifle has a manual, two-position gas regulator.
After discharging the last cartridge from the magazine, the bolt carrier and bolt are held back on a bolt catch that is released by pulling the cocking handle to the rear. The rifle has a hammer-type striking mechanism and a manual lever safety selector. The firing pin is a "free-floating" type and, as a result, some soft-primered ammunition had the reputation of causing a "slam fire" event. Thus, military grade ammunition with primers confirmed to be properly seated is recommended for the Dragunov and its variants. This appears to have solved the "slam fire" issue. The rifle's receiver is machined to provide additional accuracy and torsional strength. The Dragunov's receiver bears a number of similarities to the AK action, such as the large dust cover, iron sights and lever safety selector, but these similarities are primarily cosmetic in nature.

Specifications
Weight4.30 kg (9.48 lb) (with scope and unloaded magazine)[2]
4.68 kg (10.3 lb) (SVDS)
4.40 kg (9.7 lb) (SVU)
5.02 kg (11.1 lb) (SWD-M)
Length1,225 mm (48.2 in) (SVD)[2]
1,135 mm (44.7 in) stock extended / 815 mm (32.1 in) stock folded (SVDS)
900 mm (35.4 in) (SVU)
1,125 mm (44.3 in) (SWD-M)
Barrel length620 mm (24.4 in) (SVD, SWD-M)[2]
565 mm (22.2 in) (SVDS)
600 mm (23.6 in) (SVU)

Cartridge7.62×54mmR[2]
ActionGas-operatedrotating bolt
Muzzle velocity830 m/s (2,723 ft/s) (SVD)
810 m/s (2,657.5 ft/s) (SVDS)
800 m/s (2,624.7 ft/s) (SVU)
Effective firing range800 m
Maximum firing range1,300 m with scope
1,200 m with iron sights
Feed system10-round detachable boxmagazine[2]
SightsPSO-1 telescopic sight and iron sights with an adjustable rear notch sight




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