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CarbineMachine Sten 9 nim. Mk. II

General Instructioiis

HandlingStrippingCleaning

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CARBINE, MACHINE, STEN, 9 mm.Mark II

CONTSNT*c,1. General description2. Stripping And assembling3. Action of mechanism-I. Care ud cleaning5. Stoppages, and I.A.0. Handling and sighting7. Points to note ...8, Description and filling at aufiiino r

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I. General descriptionThis weapon can fire all types of 9- mm. round noseammunition (I.C.I., Winchester, Sain, Beratta,German, etc.).

It is of the blow back type, that is, it has no locking device,whereby in filing a cartridge, part of Ibe explosive forcedrives tlie breech block rearward.The firing pin is integral with Ike breech bloek and. is inthe iona of a small projection in the cartridge recess.Provision is made for automatic and single shot firing, bymeans of a change ievex. The butt and barrel are readilydetached from the casing, tliereby facilitating carrying.By raising the catch located on the front side of the magazinehousing, the latter can be rotated to a downward position toJacilitste stowage.A boa type magazine having a capacity of 32 rounds isused, being inserted into the left Bids of the carbine andretained by a spring-loaded catch.

Safety La ensured by cocking the breech block, and rotatingthe cocking handle anti-clockwise until it is engaged in theabort riot in the top of the cuing.

2. Stripping and AssE.uBi.iHa1. Ensure that the carbine is unloaded and the breech

block is in its forward position.2. To rcmovs tit bmti.Depress the circular -shaped end

of the return spring housing from engagement with the frontplate of the butt, 4t the t*n>* time slide the butt downwardfrom engagement.

3. T# nmwt t*t brmk bhtft.[a) With thumb and forefinger, picas forward the returnsoring cap about | inch and partially rotate it anti-

clockwise, whereupon the two small lugs on the capwill diseogage from tbtir respective grooves in thecasing. Remove the return spring limning, cap andreturn spring.


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(*) rull Hie htvtxb. fclwt a*watd an-d remove the cockinghandle when opposite the safety slot. Insert thecodling handle in front of tbe breech block and pullthe breech block rearward until clear of the casing,

[To strip the ulracfor.Remove the extractor pinwith a pin punch ; the extractor-and spring can thenbe removed.)

4, Ta remove the baw+fl,Disengage the barrel nut catch,which is located in front of the magazine housing- rotate themagazine housing: anti-clockwise (downward), unscrew thecyliiidrically shaped barrel nut, and remove with barrel.

5, To strip ike trigger Mechanism,Viae*with its underside facing upward.

the carbirw

(a) KvDKi\c the screw on either slde-al the trigger rucchan-ism cover. Pull off cover.

(6) Unhuuk the trigger coil spring Iroin the tripping leverpawl and the trigger. Remove the tripping leverpawl which is in the Jorm of a short coil spring.(c) 1'usl i ou t the sear axis pin and remove the sear.(J) Remove the split pin in the change lever, and, whileholding the tripping lever clear,, push out thechange lever.() From the right side, remove the trigger axis pinwhich is in the form of a bent wire, Full out tin

tripping lever, with trigger toward the front. Dis-connect the tripping lever from the trigger byremoving the tripping lever pin._6. To remove the barret nut catch,Remove split pin. Full

out the magazine housing plunger and remove the magazinehousing spring and the barrel nut catch.

liA.. To remove magazine latch retainer screw from the rearside of the magazine housing. Prise oil the retainer andremove the magazine catch with spring.

1 , Toatumble battel nut eatek,While holding the magazinehousing in position, insert the barrel nut catch in its respectivehole and position the coll spring between the catch and thelug on the magazine bousing. Insert the magazine housingplunger in th* lug and the sprint, so that the end oi the

plunger enters its jespective hole in the casing. Using ascrewdriver as a lever, raise the rear end of the catch and fitthe split pin.,8. To assemble magazine rotes.Insert the magazine catch

in its respective slot in the underside of the magazine housing.With the catch spring in position and using a screwdriveras a lever to compress the spring, push the catch into position.MfiMly tap the magazine catch retainer untrt its screw holeis in lxisttion with a similar hole in the magazine housing. -Insert the screw with washer,

9. To assemble trigger wrriOHisw. PnsiLinu the caTbhiewith its underside facing upward.(a) Enter the sear (with the seat bent pointing rearward)between the left and right side plates and insertscar axis pin.{b} Assemble the tripping lever to the trigger (wheneorrertty assembled, the trigger spring hook isdirectionally opposite to the short arm of the-

tripping lever).(c) Enter the trigger and tripping levtr {trigger first)between the side plates and, with the short arm ofthetripping lever pointing towards the interior ol thecasing, raise the trigger to position in the biggerguard, insert the trigger pin and ensure that itsshort end is entered in its respective hole in the -rightside plate. Rotate the sear forward so that thetripping lever rests on the side of the sear. Rotatethe sear to its former position, with the sear bentpointing rearward.(tf) While holding the tripping lever clear, insert thechange lever through the largest hole and replacethe split pin.(r) Replace the tripping lever pawl (this is in the formof a short Coil spring) on tbc tripping lever pawl pinwhich is riveted to the seaT. When correctlyassembled, the long arm of the tripping lever pawlShould bear against the tripping lever,(/) Attach one end of the trigger spring to the triggerspring hook and the other end to short arm of thetripping lever pawl.(g) Assemble the trigger mechanism cover nd replace tbetwo screws and washers. Place the carbine with itaunderside lacing downward.


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(b) Mat*jcction. The empty case, oo being extracted fromthe chamber, la not ejected through the ejection opening.but remains in the casing, whereupon the breech block cannotgo fully forward to fire the charge.(ci Misfire, Due to the accumnlation of carbon or dirton the breech block: face ami cartridge recess; the firing piu

cannot reaeh the cartridge cap.(if) Burst case. I)uc to blew back. i.e. round fired before

it has entered chamber; may occur with a dirty chamber, oran yt hi rig which, impedes the free entry ul the cartridge to thechamber. Way also result in separated case.The following immediate action will be uacd fur nilstoppages ;

I. Cock the giin and put at safety.'*, Ktrauvt the magaiine.S. Remove any live round or empty case which may Ikin the casing.4. If there is a live round in the chamber, Are the gunwithout tkd HUfuini, cock the gun and pat at*' safety,5. Replace the magazine.6. Continue firing.

NoU.It stoppage Is due to burst CISC, shake out amfragments f the rartririgt case through the ejection opening,ami examine the barrel to ensure that a bullet is not lodge.in the burc. To do this cock the carbine, place thumbnaillu-hiod the chamber and look down Ww bore of the barrelfrom ike niozzk.

II the stoppage persists, change the magazine and examinethe lirerch hkjck face for dirt.II stoppages still occur, examine the mechanism for burred.da mag I'd or broken components

fi. HANDLING AND SIGHTINGWhen sltootiug, the weapon must not be held by grippingthe magazine. The-correct grip is the barrel dm*. Keeppagerschar of tie ejection opening. No appreciable heat is felt intin: barrel nut until after 8 loaded magazine* (of 32 rounds.

i-acJi] have been fired continuoasljr in sliort bursts. Whenbarrel and barrel nut are too hot to handle they can be cooledby removing and dipping in wslw. Double tnp* during the

firing of single shots, i.e two or three- cartridges may be fired(like automatic firing), indicates that theweapoo is- he Id looselyagain** ilie shouJder or hip; firmer gnp will remedy thistendencyTlw fixed backsight enables accurate abooting up to a rangeof 2U0 yards.

7, POIMIS TO KOfBNo oiling of the breech block or trigger mechanism isrequired ; the woapon is designed to operate without Use use

of oil. The weapon must be flred dry.The magazine (32 rounds) is common to the LauclicstcrCarbine.

?, Description ^np riUJHO OF MAS*-Magazine

The magazine |& f tlrc box type and Consists essentially ofthe case, platform, bottom plate, and retainer bottom plain.The bottom plate retainer Is attached to the roil of thespring, a raised part of the retainer protruding IhJOugh abole in the bottom plate.Shipping and asu**biiHg

Depress the bottom plate retainer and slide oil the bottomplate, remove spring and platform; assemble in the reverseway.

FillerThere are two types of filters available, hlks. 1 ami II.Mk. l consists


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Depress the tail, on which the fourth finger rvsta, and inserta round in 111* opening wjfli the right hajid. Raise the leverby tiuaita vf the third finger and depress again to insert anotherround ; repeat this procedure until 32 rounds have beeninserted.To removt ammunition from magtuin*Hold lue magazine in the left hand and push out the roundswith the thumb of the right hand.NoUFaults in functioning will develop if the magazinecast is dented or the lips damaged, or if dirt enters the case.Whtiv assembling magazine into carbine, ensure that themagazine catch engages correctly.Should the magazine Jail to fcvd Die rounds during firing.leinovc niaga&lic from carbine, knock, the end of the magazineagaiast the Lnee. re-insert masraiine in eArbine,

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Stenmkiisubmachinegun Text

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