NOT TO BE PUBLISHED WwmUm »lno In tbl« docvraut Is (* t»fc* tUB4* tM(B«l«M, dlr-trl ? *r h*lr*cti 7i «• tfc« Prtff«r ft- may pmn att b*ld(*£ * BMial pmuna la HM Carbine Machine Sten 9 nim. Mk. II General Instructioiis Handling Stripping Cleaning Assembling raa., itu CARBINE, MACHINE, STEN, 9 mm. Mark II I. General description This weapon can fire all types of 9- mm. round nose ammunition (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 force drives tlie breech block rearward. The firing pin is integral with Ike breech bloek and. is in the iona of a small projection in the cartridge recess. Provision is made for automatic and single shot firing, by means of a change ievex. The butt and barrel are readily detached from the casing, tliereby facilitating carrying. By raising the catch located on the front side of the magazine housing, the latter can be rotated to a downward position to Jacilitste stowage. A boa type magazine having a capacity of 32 rounds is CONTSNT* used, being inserted into the left Bids of the carbine and retained by a spring-loaded catch. «c, ruu Safety La ensured by cocking the breech block, and rotating the cocking handle anti-clockwise until it is engaged in the 1. General description I abort riot in the top of the cuing. 2. Stripping And assembling l 2. Stripping and AssE.uBi.iHa 3. Action of mechanism 4 1. Ensure that the carbine is unloaded and the breech * block is in its forward position. -I. Care ud cleaning 5 2. To rcmovs tit bmti.—Depress the circular -shaped end of the return spring housing from engagement with the front 5. Stoppages, and I. A. 5 plate of the butt, the t*n>* time slide the butt downward 4 4t from engagement. 0. Handling and sighting i 7. Points to note ... j 3. T# nmwt t*t brmk bhtft. [a) With thumb and forefinger, picas forward the return Description and filling at aufiiino 8, r 7 soring cap about | inch and partially rotate it anti- clockwise, whereupon the two small lugs on the cap will diseogage from tbtir respective grooves in the casing. Remove the return spring limning, cap and return spring. plunger enters its jespective hole in the casing. Using a screwdriver as a lever, raise the rear end of the catch and fit the 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 screwdriver as a lever to compress the spring, push the catch into position. MfiMly tap the magazine catch retainer untrt its screw hole is in lxisttion with a similar hole in the magazine housing. - Insert the screw with washer, (*) rull Hie htvtxb. fclwt «a*watd an-d remove the cocking handle when opposite the safety slot. Insert the 9. To assemble trigger wrriOHisw.— PnsiLinu the caTbhie codling handle in front of tbe breech block and pull with its underside facing upward. the breech block rearward until clear of the casing, (a) Enter the sear (with the seat bent pointing rearward) [To strip the ulracfor.—Remove the extractor pin between the left and right side plates and insert with a pin ; extractor-and spring can then punch the scar axis pin. be removed.) {b} Assemble the tripping lever to the trigger (when eorrertty assembled, the trigger spring 4, Ta remove the baw+fl,— Disengage the barrel nut catch, hook is directionally opposite to the short arm of the- which is located in front of the magazine housing- rotate the tripping lever). magazine housing: anti-clockwise (downward), unscrew the cyliiidrically shaped barrel nut, and remove with barrel. (c) Enter the trigger and tripping levtr {trigger first) between the side plates and, with the short arm of the 5, To strip ike trigger Mechanism,—Viae* the carbirw tripping lever pointing towards the interior ol the with its underside facing upward. casing, raise the trigger to position in the bigger guard, insert the trigger pin and ensure that its (a) KvDKi\c the screw on either slde-al the trigger rucchan- short end is entered in its respective hole in the -right ism cover. Pull off cover. side plate. Rotate the sear forward so that the tripping lever rests on the side of the sear. Rotate (6) Unhuuk the trigger coil spring Iroin the tripping lever the sear to its former position, with pawl and the trigger. Remove the tripping lever the sear bent pointing rearward. pawl which is in the Jorm of a short coil spring. (tf) While holding the tripping lever clear, insert the (c) 1'usl i ou t the sear axis pin and remove the sear. change lever through the largest hole and replace the split pin. (J) Remove the split pin in the change lever, and, while holding the tripping lever clear,, push out the (r) Replace the tripping lever pawl (this is in the form change lever. of a short Coil spring) on tbc tripping lever pawl pin which is riveted to the seaT. When correctly From the right side, remove the trigger axis pin («) assembled, the long arm of the tripping lever pawl which is in the form of a bent wire, Full out tin Should bear against the tripping lever, tripping lever, with trigger toward the front. Dis- Attach connect the tripping lever from the trigger by (/) one end of the trigger spring to the trigger removing the tripping lever pin. spring hook and the other end to short arm of the tripping lever pawl. _ the barret 6. To remove nut catch,—Remove split pin. Full (g) Assemble the trigger mechanism cover «nd replace tbe housing1 plunger out the magazine and remove the magazine two screws and washers. Place the carbine with ita housing spring and the barrel nut catch. underside lacing downward. liA.. To remove magazine latch retainer screw from the rear side of the magazine housing. Prise oil the retainer and remove the magazine catch with spring. 1 , To atumble battel nut eatek,—While holding the magazine housing in position, insert the barrel nut catch in its respective hole and position the coll spring between the catch and the lug on the magazine bousing. Insert the magazine housing plunger in th* lug and the sprint, so that the end oi the protrudes into the casing, la depressed by the bent, thereby allowing the sear to rise under the action of the extended trigger spring. Continuing forward, the two hnmi on the breech block lace co-ntaet the l*a« of a cartridge and push it from the magazine into the chamber. The c» tractor engages the cannelure on the cartridge base. The firing pin. which «5 solid with the breech block, strikes the cartridge ™p to fire the charge, Backward attion, 10. To tumble bree(h fcft*A.—Insert the breech block in the Vbsi of the explosive fosce drives the breech block rearward. casing with its cocking handle bole In lino with the cocking handle the empty case being hold by the extractor. The ejeetoT, slot in the casing. Pull the trigger end push the breech block forward which protrude* into the runway between the two horns, until the caking handle bole ia opposite the contacts the base of the empty case to eject Ihe case through safety alot id the CAaing. Insert the cocking handle into the (he ejection opening on the right side of the gun. Continuing breech block as far as it will go. Pull the trigger and U3h p rearward ami compressing the return spring, the breech block the breech block home to its forward position. is held by Lite sear. This terminates the cycle of operation lor single shot firing. 11, To mumbte return spring and housing.— Insect the return spring. Replace the return spring housing and cap Gun set for automatic firing. " on thr rinl of the return spring, Press forward so that the By pressing the end of the change lever marked A," lugs on Hie capente r their respective grooves in the end of. the the tripping lever is pushed aside from the path of the bent on casing, rotate the cap clockwise and allow it to tafcr up it$ the underside of the breech block. Automatic firing will jnn.it ion rearward. continue as long aj pressure is maintained on tbe trigger or uikLil the magazine ia emptied. 12, To atttmtirU ihtrrrL—Raise the barrel nut catch anil partially rotate the magazine bousing until the catch is dear 4. Cana and cleaning of the hole. Replace the barrel ; before screwing the barrel nut fully home, return 'the catch to its former position so that Normal cleaning should be carried out. No oiling is re- Ihe teeth of the catch engage the serrations the on end of the •quired ; the carbine is designed to function without the use barrel nut. Tighten the barrel nut by hand only. Undue if oil. tightening is unnecessary, the barrel nut catch being sufficient The bore of the barrel can be cleaned with a rifle pull- to retain the barrel nut in position. through, but mast be removed first, as the pull through weight is too long to go through the ejection opening. 13. To assemble butt.—With the birtt stud positioned in For storage the breech block and barrel should be greased line with it* respective slot, press the end of the return sprint; or oiled.