F.N. MODEL 49 SELF - LOADING RIFLE USER ‘S MANUAL l+.
HOW THE P. N. SELF-LOADING RIFG WORKS The gun being ready for firing the action on the trigger releases the hammer. Under the tension of its springs, the hammer strikes the firing pin, which in turn strikes the primer of the cartridge and ignites the powder charge. 1st. phase. - Tho bolt opoam uador the actton oi the gas. A small amount of gas escapes through a port bored in the bai rel and passes in the gas cylinder where it kicks the piston back. The piston drives the bolt carrier back.
Fiq. I. a) Short gas cyhcler. The 9as cylinder (IB) is a very short tubular element, easily cleaned, after the gas cylinder plug and the piston have been removed. As experience has shown that the gas acted on the piston in the way of a hammer blow, without any expanding, the ions cylinders which were generally, used in gas operated rifles, have consequently become useless. b) Gas escape. - After they have acted hi on the piston, the gas escape outside throu9h a top of the front end of the 9as cylinder.
d) Iodm of the pbton. - The piston (12) and the bolt carrier (27) are located in a-straight line, without any COtUl8CtiOn. The return of the piston is performed instantly under the action of its own spring (13) without the interference of the return springs. It is owing to this original feature that it is possible to load the gun the same way as a repeatinb rifle. Turning 18(r the qas cylinder plug (8A1, cuts the inlet of the piston does not transmit any thrust on the bolt carrier.
Fig. 2. First Phase (position 1 to position ‘2) : Break of contact of the surface at B. The bolt is still locked (A) while the pressure in barrel is dropping. F&J.3. Suomd mechanism. b (position 2 to position 3) : Unlocking of the The contact between surfaces C forces the bolt up.
Position 3 Flq. 4. ‘IMrd Phase (position 3 to position 4): Direct opentnq. The bolt and the bolt carrier are travellinq together rearwards owinq to the contact of surfaces F. When the parts are stopped at the rear, they are in position the double return spring is compressed. 4, Flq. 5. The clin 3 phases : of the me&w may be schemed as below Fowth phase (position 4’to position 5)‘: Clorinq of the mechanism.
Position 5 Fh. 6. FWh Phase (position 5 to position 6) : L.ockinq of the mechanism. At this moment the slope H forces the rear part of the bolt downwards, in the lockinq position. Position 6 Flq. 7. Sixth m (position 6 to position 1). Confirmation of the its movement forward and the bolt is maintained in the locking position by the surfaces B. lockhq. The bolt carrier continues The repeatinq cycle is identical with the automatic cycle.
3. FEEDING - EXTRACTION - EJECTION The additional parts actin@ in this phase are : the extractor (22) and the elector (51). a) B&action of the case. - The extractor which is fitted on . the right side of the bolt performs this operation by direct extraction for the wlthdrdwal of the case (see above : 3d phase - posittin 3 to position 4). b) Ejociioa - The ejector is of the fixed type and is fitted in the trigger quard at the rear of the magazine.
very eaa to ensure, with a thorough knowledge abouts a perfect functioning of the rifle. With electors which are fitted elastically cannot be reached. of the where- on the receiver this c) lntroductlon of a cart&go. - The bolt has two ribs on its lower side, these ribs, when the bolt is closing (see above 4th phase, - position 4 to position 5) push alternatively the left or the right side cartridge directly into the chamber.
J Fw Fiq. 10. 9 Action of rifle ftrt.119only stn910 shot fire. a) Sopcuotion of the shots iu stn910 shot ftro. - The device which allows to fire exclusively shot by shot, has been taken over from an outstandmg weapon (The Browning automatic shotgun). Since more than 50 years It ensures a perfect functioning to this popular gun. The hammer (31A) is forced bolt and bolt carrier and it is in hook, which is made up by the as the main sear (36) and by auxiliary sear (39).
Fig. 12. Flq. 11 Action of rlflo !irinq rIaq10 rhot and full automatic5m ahot or full automatic fire. the foUowinq For rifles ahIs !o shoot either sin+ parts are designed as to deliver this kind of firing. their item number are then as follows : Auxiliary sear (39) superseded by auxiliary sear (239) :.
c) Cocking iadkutor. As the hammer is completely concealed U-I the weapon, it is desirable that there should be a way to make sure externa!ly.if the rifle IS ready or not for action. To this end, the guide (31B) of the hammer spring protrudes beneath the trigger guard when the hammer is cocked. It is thus easy, even m the dark, to make sure by mere feeling if the hammer is cocked or not. d) !Safoty.
action of its own spring as soon as it has thrown the bolt carrier rear-wards. 2” The action of the holding open’device and bolt carrier to the rear. Flq. which holds the bolt 13. This device (43A) consists of a plunger located vertically at the rear of the magazine and in front of the bolt when the bolt is in its full rearward position.
closing the rifle only requires a short pull on the operattnq handle, so introducing a cartridge *into the chamber. Pulling of the opemting handle compels indeed the bolt to withdraw releasing the holding open device which withdraws in tts houstng under the action of its spring. If it is desired to refill the magazine before it is empty in order to give the rifle its full potentiality of fire, the bolt carrier stop is to be used.
and of the bolt carrier. In fact, the hammer can only reach the firing pin when the bolt is locked and positively confirmed in this position by the complementary m*otion of the bolt-carrier. 2y The second safeguard is performed by means of a firing pin stop (26) which prevents the striker to protude in the face of the bolt so long as the locking of the rifle is not performed, as the bolt carrier prevents any motion of the firing pin stop upwards (see fig. 15). On the contrary.
HOW TO HANDLE THE RIFLE TO MAKE, THE GUN SAFE With thumb of right hand, rotate safety lever downwards. In this postnon of safety lever, trigger IS posrtively locked. Moreover safe!y lever prevents the fmger of the shooter to reach the trigger. It 1s so very easy, even in the dark, to make sure that the gun is safe. To release safety, reverse the movement of safety lever upwards, wrth index fmger of right hand.
gun. To make the weapon ready for firing, one has just to cock the mechanism to introduce a cartridge into the chamber. If the weapon is partially unloaded, it is possible to complete the loading of the magazine : grasp operating handle with right hand, pull mechanism fully rearwards. With thumb or right hand depress bolt carrier catch and release operating handle, the bolt carrier will be held in the rear position by bolt carrier catch.
STRIPPING AND ASSEMBLING L FIELD STRIPPING AND STRIPPING ASSEMBLING THE MECHANISM Turn receiver cover locking key 18W upwards, grasp receiver cover and slide it forward against action of recoil springs, raise shqhtly rear end of receiver cover in order to disengage cover from guides m receiver. Release cover rearward. Cover and recoil springs will so be removed from receiver.
extractor spring head in bolt (extractor spring being at an angle of 900 with the bolt). Release firing pin which, under the tension of firing pin spring will hold extractor spring. Replace extractor in its seat. Rotate extractor spring 90” in order to insert it in extractor seat. Replace firing pin stop. ASSEMBLING THE MECHANISM Replace bolt in bolt carrier.
COMPLETE STRIPPING OF THE RECEIVER COVER Remove the return sprmqs by disenqaqmq. with the help of a screw-driver, the first coil of the inner sprmq from the end of its rod. Separare the outer sprrnq from the inner springs and the inner sprmqs from their guide. To strip the backsight : depress tail of sight leave in order to compress the sight spring and to disengage the leave studs from the shoulders. Draw back the sight leave and remove it from the cover.
To remove cover plate, raise its front end in order to disengage it from its groove and swing the cover 90’. In the case 01 rifles fitted for the lull autoiatic lirmq. with the barrel.receiver assembly ranowd born Iho #lock it is powblo to remc~ve the safety aoar lrom the rec~wer. Depreu a&ty sear lorwards and at the same time diwnqaqo safety sear from its housing by raisinq it. The sale~y sear and its spnnq are thus tree.
intermediaie position between l Safe l and . Off l . Depress safety spring plunger, press safety fully home. To assemble the action ; replace trigger spring and plunger in their housing, replace the trigger in the trigger guard from the top, taking care that the stud fitted on the safety lever is engaged in the groove cut in the trigger, replace auxiliary sear spring and plunger in their housing in the auxiliary sear, replace auxiliary sear assembly into the trigger guard, the hooks.
screw in lower band screw. Replace handguard front part, insertmg first its rear end under lower band. Replace front end cap as to fix front end of handguprd and screw in front end cap screw. ASSEMBLING THE COVER Replace bolt carrier stop : replace bolt carrier catch stop and bolt carrier catch spring in their housing in the bolt carrier stop. Place bolt carier catch axis in its housing in the cover, at an angle of about 60”. depress bolt carrier catch stop and turn bolt carrier stop home.
RECOMMENDATIONS 1. The rifle must always be on safe during transport. 2. Working parts ought to be slightly oiled. It is however Important not to overlubrlcate when the rifle is used m a sandy country. It 1s then better to keep the gun nearly dry. 3. Make sure before firing that barrel 4. Make sure that magazine is clean. is clean and dry. 5. Make sure that magazine is fully home in trigger guard and well engaged by magazine catch. 6. Do not mtroduce by hand a cartridge in a hot barrel. 7.
NUMRRICAL DATA Weight of rifle . . . . . . . . . . . . . . 4,300 kg Weight of single barrel 0,920 kg Weight of barrel as&nbly Lenght of rifle Lenght of barrel ............ .......... 1,120 kg 1,110 m .............. 590 mm .............. Weight of bayonet (230 mm long) ....... Weight of baycmkt with scabbard .... Weight of bayon&@ mm long). Weiqht of long ksyonst with z&bard. 0,320 kg : .. ...... 0,550 kg 0,450 kg .....
COMPONENT N.B - l Number c! par,. 1 1A 1B 1C 1D 1E : : 8A 8B 8C 8D 12 13 15 lSA- ‘215A 1SB . 216A . 216B . 216C . 217 19 19A 19B ;; ;: ;: 27 - l227 28 30 - l230 31 31A-•231A 318 31c 46 PARTS Components used for nIlis allowmq automalic NAME IrrInq. ouant.pm Gun. . . . . . . . -Barrel . Assembly Barrel . . . . . . . . . ........... Gas Cylinder Gas Cylinder Securing Pin ...... Piston Guide Piston Guide S&i& Pin’ : : : : : ............ Muzzle Cop Front Siqht Gas odjustinq Sleeve : : : 1 : : : .....
Number I) * 1 0 * v I) of part. 232 232A 232B 232C 232D 232E 232F ::A 34B :: 37 38 39 - l239 40 41 42 43 43A 43B 43c 44 45A 4SB 46 46A 468 46C 46D 46E 46F 46G 2:. 53 54 55 56 57 58 ::A 60B NAME Quant. per Gun. Automatic Fire Lever Automatic Fire Lever B&y . : : : . . Automatic Fire Lever Arm . . . . . Automatic Fire Lever Arm Plunger Automatic Fire Lever Arm Stop . . Automatic Fire Lever Stud . . . . . Automatic Fire Lever Locking Screw . Hammer Spring . . . . . . . . . Hammer outer Spring . . . . . .
Numtmr 01 pd. 60C 60D 60E 6OF 60G 60H :; :; 66A 66B 66D 66E 66F 66G :;A 67C 67D 70 i0A 708 7oc 71 72 73 74 75 76 zl 79 85A - “2::A 85B 85E 85F ::A 86B 86C 86D so NAME Ouont.par Gun. Maqazine Case Luq . . . . . . Cartridge Frdnt Guide . . . . . . Maqazine Catch Hook . . . . . . Magazine Rivet, lonq . . . . . . Magazine Rivet, short . . . . . Magazine Catch Hook Rivet . . . Magazine Platform . . . . . Magazine Platform Spring . . . . Receiver Cover . . . . . . . .
86E 87 87A 87B 88 :A Handguard Rear Cap Rivet ...... ...... Front End Cup - assembly ....... Front End Cup Body ....... Front End Cap Bushing’ ....... Front End Cup Screw ....... Lower Band assembly ......... LowerBandBody LowerBandScrew g LZA STA.27 STZ STA.19 STA.28 STA.26 93 93A S7A.F 501 2 1 f 7 ......... Lower Band Screw Retaining Screw ... .......... Swivel, complete .......... Swivel support ..... . Swivel .... Swivel Ptn 1 1 1 1 1 1 . Swivel Base and Butt Plate Screw .... .........
Numbor of pm. NAME aant. per Gun. BBAssBurrPLATEwKlfTMP . . . . . . . . . . . STA.32 Butt Plate ST-A.33 Butt Plate Trap STA.34 Butt Plate Trap P&t’ : 1 : : : : : : STA.35 STA.36 Butt Plate Butt Plate STA.51 STA.52 STA.53 STA.54 STA.55 Butt Butt Butt Butt Butt Trap Spring Trap Sprinq f SC;& 2 STAT STA:45 : : : : : Plate Plate Trap ’ : : : : : : : : . . . . Plate Trap Pivot Plate Trap Plunger’ : . . . . Plate Trap Sprint . . . . .
F.N. MODEL 49 SELF - LOADING RIFLE USER ‘S MANUAL l+.
