Gas Cutoff

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Gas Chamber For Sks

Figure 4 . M59/66 gas cutoff.

Figure 4 . M59/66 gas cutoff.

Technical Data

Technical data concerning the SKS carbine will be found in table

Operation a. Grasp the operating handle (fig 1 ), pull it fully to the rear, and release it. If the magazine is empty, the bolt will remain open. Insert a stripper clip into the clip guides at the top front of the bolt carrier, and with the thumb as close as possible to the base of the top cartridge, press the cartridges off the clip and into the magazine (fig 5 )• Remove the empty clip, if clipped

Type Sks Rifle
Figure 5 - Loading the SKS>

ammunition is not available, individual cartridges can be placed on top of the magazine follower and pressed down into the magazine until it h full- Pull operating handle rearward and release it; the bolt will run forward and chamber a cartridge.

CAUTION: The rifle is now ready to fire!

b. If the rifle is not to be fired immediately, apply the safety (fig 1 ; by rotating it forward and upward.

c. Set the rear sight for the desired range by depressing the slide catch (fig 1 J and moving the sight bar along the leaf until the front edge of the bar is aligned with the line below the number that corresponds to the range in hundreds of meters. The first character on the sight leaf is a battle sight setting that is used in combatt for shooting at ranges up to 300 meters. The Yugoslav M59/66 has folddown luminous sights (fig 3 ) for use when firing under poor light conditions; flip these up for use.

d* The front sight is adjustable for zero.

e. To fire the weapon, rotate the safety rearward until it is parallel to the trigger; then aim, using a normal sight picture, and press the trigger. The SKS will fire one shot and reload itself; when the last round has been fired, the bolt will remain open. (The gas cutoff of the Yugoslav M59/66 must be turned to the right for the rifle to function. Press the gas cutoff button (fig 4 ) down and swing to the right).

f. To unload or clear the SKS, apply the safety, then pull back the magazine catch (fig 3 ) and allow the magazine to swing open- Remove ail cartridges and close the magazine. Grasp the operating handle, pull it fully rearward to eject any cartridge that might have been in the chamber, and release the handle; the bo!t will remain open- Inspect to insure that no cartridges remain in the magazine, barrel, or receiver. Close the bolt, either by opening the magazine again and pulling rearward on the operating handle and releasing it, or by pressing the magazine platform down slightly and pulling the operating handle rearward and releasing it. Move the safety to the ready position, press the trigger and apply the g. The SKS bayonet is affixed by forcing the hilt to the rear (against spring pressure) and swinging the bayonet forward until it locks to the muzzle. This action is reversed to fold the bayonet in its stowed position.

h. The Yugoslav M49/56 can launch rifle grenades- The grenades must have tail booms of 22-mrn inside diameter and if at all possible, only Yugoslav-made grenades should be iaunched. Prior to firing grenades, clear the rifle and cut off the gas mechanism by pressing in the lock (fig 4 ) and rotating it to the top of the gas cylinder. Lift the grenade sight to its vertical position. Pull the operating handle rearward until it is caught open and insert a grenade launching cartridge into the chamber. (Note: These cartridges are packed in the tail booms of the Yugoslav grenades.) Under no circumstances can a bulleted cartridge be used; to do so will cause the grenade to explode on the launcher- Depress the follower and while holding it down pull the operating handle rearward then ease it forward. Tap the operating handle forward to insure that the bolt locked. Slide the appropriate type grenade fully onto the launcher. To launch the grenade, move the safety to the fire position, align the appropriate range arc (fig6 ) with the ogive (largest diameter) of the grenade and then align the sight and grenade on the target- Press the trigger.

i. Prior to firing successive rounds, the operating handle must be smartly drawn rearward to eject the fired cartridge case-Prior to firing bulleted rounds, fold the grenade sight rearward, press in the lock (fig 6 ) and rotate it to the right as far as possible.

Disassembly and Assembly a. To disassemble the SKS carbine:

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Figure 6 M59/66 grenade sight erected.

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Figure 6 M59/66 grenade sight erected.

(1) Clear the weapon

(2) Press in on the cover in the butt plate until the combination tool case is ejected- Unlock the bayonet, let it hang vertically, and after disengaging the head of the cleaning rod from the front sight base, pull the cleaning rod out of the rifle.

Note: The East German Karabiner-S does not have a combination tool case in the butt, nor does it have a cleaning rod; these are carried separately.

(3) Rotate the receiver cover pin (fig 2 j to a vertical position and pull it out as far as possible-

Note: It may be neccssary to piy the tecciver tovcr pin handle away fsoni the receiver before il can b-e rotated.

Remove the receiver cover to the rear and pull the driving spring assembly out of the bolt carrier.

(4) Open the magazine by pulling the magazine catch {fig 3 J to the rear. Pull the operating handle fully rearward, and lift the bolt carrier and bolt out of the receiver. Separate the bolt fro m the bolt carrier.

(5) Rotate the gas cylinder tube lock (fig 2 ) to its uppermost position and lift the rear of the handguard to remove the gas cylinder tube and the gas piston. The tube can be upended and the piston will slide out.

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Figure 7 . SKS field stripped,

Figure 7 . SKS field stripped,

(6) If necessary, the trigger group can be removed by depressing the catch located behind the loop of the trigger guard and pulling the trigger group down and out of the rifle. The safety must be in the safe position before the catch can be depressed.

(7) No further disassembly is necessary or desirable.

b. To reassemble the weapon, follow the procedure listed below:

(1) Invert the rifle and engage the pins at the front of the trigger group with the notches behind the magazine box-Swing the trigger group into position in the stock and seat it by a blow of the hand on the loop of the trigger guard. Move the safety to the fire position to insure that the catch is fully engaged.

(2) Slide the gas piston, small end first, into the gas cylinder tube; fit the large end of the tube over the gas cylinder (fig 2 )- Swing the rear end of the gas cylinder tube into the rear sight base and turn the gas cylinder lock downward.

(3J Place the bolt into the receiver, with the extractor to the right front, and position the rear of the bolt about three-eights of an inch from the inner rear wall of the receiver. Lay the bolt carrier on the bolt and while pressing down on the carrier, move it slightly back and forth until it mates with the bolt. Slide the bolt and bolt carrier fully forward in the receiver. Insert the driving spring assembly, stepped end first, into the bolt carrier,

(4} insure that the receiver cover pin is pulled fully out to the right, then slide the receiver cover into place from the rear. Secure it with the receiver cover pin and rotate the pin down to the locked position. Close the magazine, and replace the cleaning rod and the combination tool case.

Functioning a. The SKS semiautomatic carbine is gas operated (fig 8 )■ After rhe SKS has been loaded, pressure on the trigger releases the hammer, which impacts against the firing pin, firing the rifle. The propellant gases drive the bullet through the barrel, and attcr the bullet passes the gas port, some of the gases are tapped off and directed against the piston head.

b. The propel lan r gases drive the piston and operating rod rearward against the bolt carrier. This forces the carrier and the hammer rearward and compresses the driving and hammer springs-After the bolt carrier moves rearward about one-fourth inch, a cam on the inner top of the bolt carrier (6, fig Q ) contacts a projection on the top rear of the bolt and lifts the rear of the bolt up and out of its seat in the receiver. The disconnector, which has been held down by the bolt, now rises. The bolt and bolt carrier now travel rearward as a unit, while the piston is returned forward by the spring. The extractor withdraws the fired cartridge case from the chamber and holds it to the bolt until the case strikes the fixed ejector and is expelled. The rear end of the bolt carrier strikes the inner wall of the receiver, and all rearward movement then terminates.

c. The driving spring expands and forces the bolt and bolt carrier forward; the bolt drives the top round out of the magazine and into the chamber. When the cartridge is fully seated in the chamber, the extractor snaps into the groove of the cartridge, and forward movement of the bolt ceases. The bolt carrier still has a short distance to travel, and as it does, cams the rear of the bolt down into its seat in the receiver; the bolt, as it scats, forces the disconnector down. All forward movement terminates when the bolt carrier strikes the receiver.

d. The SKS has a complicated trigger mechanism (fig 9 )• The hammer is cocked by the recoiling bolt and is held cocked by a sliding sear. The sear is disengaged from the hammer by a spring-loaded trigger bar pivoted to the top of the trigger. The vertical alignment of the trigger bar is controlled by the disconnector; this, when depressed by the locking of the bolt,

1 BOLT COVER

2 DRIVING SPRING

3 HAMMER SPRJNG

4 HAMMER

5 BOLT CARRIER

6 LOCKING CAM

7 LAST ROUND STOP B BOLT

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