FN Self Loading Rifle 49 User Manual

							Flq. 11 Fig. 12. 
Action of rlflo !irinq rIaq10 rhot and full automatic 5m 
For rifles ahIs !o shoot either sin+ ahot or full automatic fire. the foUowinq 
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Auxiliary sear (39) superseded by auxiliary sear (239) :. 
Hammer (31 A) superseded by hammw (231 A) ; 
Rmiver body (15A) superwded by receiver body (215A) : 
Bolt carrier (27) superseded by bolt carrier (227); 
Triqqer ward (30) superseded by trtqqer quard (230); 
Stock (65A) superseded by stock (265A). 
Further on the Iollowinq parts arm used : 
Safely sear (216A); 
Safety soar sprinq (217); 
Automatic fire Iwor (232). 
SW thow compononta on Lip. I1 and 12 as well a* the sectional view of weapon 
at the end ol this pamphlet. 
It ought furthermore to be noticed that : 
1” The weapon being on safety, with the trigger locked, the 
cocking of the rifle by hand is possible owing to the oval slot (A) 
of the hammer, which is consequently able to move longitudinally. 
2” If the finger depresses the trigger at the moment the hammer 
returns backwards any shock to the finger is prevented owing to 
the elasticity of the linkage of the auxiliary sear. 
bl Double pull. - This is the result of the action of the auxiliary 
sear spring which resting against the trigger cooperates with the 
trigger spring and gives the shooter the feeling of a l double pull s 
motion. 
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							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. - The safety (46) is located on the side of the 
trigger guard, it is consequently very easily acceSsible and is 
easily actuated without removing the hand from the butt. 
As the angle between the positions l Fire l and . Safety s is 
important, the safety is easily felt in the dark and even visible 
from a certain distance. 
The arm of the safety is fitted, inwardly, with a spring plunger 
which fixes it in the selected position. In the l safety l position, 
the safety worjcs like a skid against the trigger in such a way that 
the more the action on the trigger is sharp, the more the safety is 
confirmed. 
In a rifle equiped for lull automatic fir*. the workinq of tha action 11 different 
lrom that 01 the single ahot lire in the following points : 
Aa the automatic Iir~.Iww (232) Is located In th* posltion . A l : the cylin- 
d&al ,XXt of the lever bcdy Is in contact with the icmq of lb auxiliary sear (239) 
and prevents the sear lo pivot Iorward when the triqqer II depressed. The 
enqaqement 01 the hammor (231A) by the auxiliary soar II conuquentl,y impos- 
sible when the triqqer is depressed. In other worda, thr auxiliary sear (239) Is 
switched out and does not mlorlere any more in the action. 
On the other hand, aa low aa the triqqw is depressed. the main sear bolnq 
no more In tha way of the hammer (231): this ia not catchd aflw each shot. The 
bmxn soar ia however superseded by the safety ~ear (216) whose rear end 
penetrates a qroova in the hammer and keeps it at the rear until the bolttarrior 
comes tack to its forward ,:~siMon. The safety war is than pushed loword 
by the belt-carrier and its sprinq (217) compressed. Th. hammer is then fin 
to b flung forward unaer the a:tlon of its sprinqs (34-A-B). 
When the triqqor is r&awd, the main war. whkh b one ploco with the 
triqqor, h aqaln in the way of the hammer mrd catch- the hammer norwards, 
s:opplnq con~equ.ntly th. firinq. 
5. LOADING 
The reloading of the rifle as it is designed with its piston 
on top of the barrel, is possible owing to : 
1’ The independence of the piston and of the bolt carrier, 
which enables the piston to move back to its locatfon under. the  
						

							action of its own spring as soon as it has thrown the bolt carrier 
rear-wards. 
2” The action of the holding open’device which holds the bolt 
and bolt carrier to the rear. 
Flq. 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. The spring of this plunger, keeps 
the plunger downward, in its housing 1 
‘&he trigger guard, and 
consequently out of the functioning of the weapon as long as 
there are cartridges in the magazine. When the last cartridge 
has been fired and the bolt has travelled to the rear, the magazine 
platform rear end engages the front end of the bolt stop, lifting 
the stop in front of the bolt and preventing it to return in the closing 
position. The shooter is consequently warned that the magazine 
of his rifle is empty. 
As the piston has returned to its forward position and as the 
bolt is held to the rear, the magazine is open to be refilled. It is 
only necessary to insert two clips, with 5 rounds each, one after 
each other in the grooves out in the receiver and to press, with the 
thumb of the right hand, on the upper cartridge of each clip in 
order to introduce the 2 bundles of 5 cartridges into the magazine. 
After the cartridges have been introduced into the magazine, 
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							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. 
This stop is fitted on the left side of the cover and is perfectly 
accessible to the thumb of the right hand after pulling operating 
handle, and consequently the bolt, to the rear. 
The retracting of this stop is the same as that of the automatic 
holding open device. 
6. SAFEGUARDS 
The functioning of the hand safety, which locks the trigger, 
has been described before. 
Further, as detailed below, the rifle may be carried with 
10 cartridges in the magasine, without cartridge tn the chamber. 
In order to be ready for firing, only pull operating handle fully 
rearwards and release it. 
Fiq. 14. 
There are two internal safeguards which make the firing 
impossible so long as the rifle is not duly locked. 
1.’ The first of these safeguards is performed without the addi- 
tion of any part, it results only from the relative motions of the bolt 
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							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. when the rifle is locked, the firing pin 
stop is allowed to raise and does no more prevent the motions 
of the firing pin (see fig. 16). 
Fiq. 15. 
Flq. 16. 
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							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. 
TO OPEN AND TO CLOSE THE BOLT 
To open the bolt, grasp with right hand operating handle and 
draw it fully back. If there are no cartridges in magazine, bolt 
will be held in the open position by bolt catch which, under the 
action of magazine platform, protrudes before the bolt. 
To close the bolt, push down magazine platform with thumb 
of left hand, at the same time draw bolt carrier slightly back with 
right hand. Under the tension of its spring, bolt catch is forced 
down and does no more protrude n-t the path of bolt. Release 
gently mechanism forward, withdraw left thumb when bolt is 
above magazine platform. 
LOADING THE RIFLE 
With right hand, grasp operating handle and pull mechanism 
to the rear. The mechanism will be held open by the bolt catch. 
Loading the gun may be carried out either by inserting single 
cartridges into magazine, or by means of 5 rounds clips. When 
the loading is completed, draw slightly back slide handle and 
let it go, mechanism will close forward under the thension of 
recoil springs, pushing a cartridge into the chamber. 
The magazine holds 10 cartridges but it is not necessary to 
!ill it, the mechanism will close in the same way whatever the 
number of cartridges in magazine may be. 
Jt is possible to close the mechanism without introducing a 
cartridge into the chamber with. the magazine loaded with 10 
rounds : 
with right hand, grasp oroerating handle and pull it 
slightly back, with thumb of left hand push down cartridges of 
magazine and release gently the mechanism, retaining it with 
right hand. The mechanism will so close above the top of the 
cartridges in the magazine and there will be no round in the 
chamber. This is an original way to transport safely the loaded 
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							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. 
Complete the loading of magazine, pull slightly back operating 
handle, bolt carrier catch will release .the bolt carrier. Release 
operating handle, mechanism will close pushing a round into 
the chamber. 
The possibility to load the gun either with single rounds or 
standard clips, and the possibility to complete the loading of 
magazfne are original features of the F. N. self loading rifle, in 
comparison to similar weapons. 
Unloading the gun may be carried out in two ways : 
The first method is to cock the gun, without firing, with the 
safety on, as many times as there are cartridges in the magazine. 
When the magazine is unloaded, the mechanism will be held in 
the rear position by bolt catch. In order to close the mechanism, 
with left hand, push down magazine platform, while right hand 
pulls operating handle slightly backwards, release gently 
mechanism. 
The second method is a follows : release magazine by pressing 
with nose ofcartridge on magazine catch, while other hand gathers 
magazine and cartridges, cock the gun in order to eject cartridge 
inserted in chamber. Replace magazine. 
All operations necessary for loading or unloading may be 
performed with gun on safety. The safety does not prevent the 
motion of mechanism either forwards or rear-wards. 
FIRING THE RIFLE 
Tg fire, put safety off, sight the rifle and depress the 
trigger. 
With a rifle fitted lor the lull automatic shoo:inq: to shoot : 
Simqla d~l fh. - Put !~re lever m positnn . S. A v, put salely in the l off l 
pos111on. Ssht the nlle and depress the Iflqqer. Each tnne the trigger is depressed 
a shot wll be hred. 
Full au(omatk Iire. - With the lire lever put in position a A l , put safety 
. off l by turnmq safety lever Siqht the r II  I e and depress the trigger. The hrinq 
wtl be automatically performed as Ion9 as the tr199er is depressed and as lonq 
there are cartndqes m the maqartne. The lirinq stops as soon as the trigger 
1s released. 
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							STRIPPING AND ASSEMBLING 
L FIELD STRIPPING AND ASSEMBLING 
STRIPPING 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. Grasp operating 
handle and pull back bolt carrier and bolt assembly until guides 
of bolt carrier are in line with clearance cut in guides of receiver. 
Lift front-end of bolt carrier and bolt assembly and remove bolt 
carrier and bolt assembly from receiver. Remove bolt from bolt 
carrier. 
STRIPPING THE BOLT 
First remove firing pin stop. Using nose of cartridge, lift 
extractor spring out of spring housing cut in bolt and rotate 
extractor spring 9W. Remove extractor. Grasp bolt at both ends 
between thumb and index finger. Push firing pin in bolt. Remove 
extractor spring, firing pin and firing pin spring. Take firing pin 
spring off firing pin. 
REMOVING THE PISTON 
Using nose of cartridge depress gas cylinder plug catch and 
rotate plug W’. Remove gas cylinder plug. Tilt rifle forward, 
piston and piston spring will slide out of gas cylinder. Remove 
piston spring from piston. 
STRIPPING THE MAGAZINE 
Using nose of cartridge, lift magazine catch and remove 
maqazine from trigger guard. Remove magazine platform and 
platform spring. Disengage magazine spring from magazine 
platform. 
The weapon is so disassembled for complete cleaning. 
ASSEMBLING THE BOLT 
Replacs firing pin spring on firing pin. Replace firing Pin 
and firing pin spring in bolt. 
Depress firing pin in bolt and replace 
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							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. Seize bolt and bolt carrier 
assembly at both ends between thumb and index and replace 
bolt and bolt carrier assembly in receiver to enable guides of 
bolt to pass through clearance cut in guides of receiver. When 
bolt and bolt carrier assembly is home push it forwards. Grasp 
receiver cover, turn upwards cover locking key, insert recoil 
springs in hole of bolt-carrier. Compress recoil springs pushing 
cover forward. 
Replace cover downwards in receiver, front end first, and 
release cover as to allow it to drop backwards fully home in its 
guides. Turn cover locking key downwards. Test motions of 
mechanism a few times by hand in order to make sure assembly 
is correct. 
ASSEMBLING THE PISTON 
Replace piston spring on piston, replace piston and piston 
spring in gas cylinder (head of piston turned to the muzzle). 
Replace gas cylinder plug, depressing plug catch, and turn plug 
in such a way that letter A is turned outside. Release gas cylinder 
plug catch. 
ASSEMBLING THE MAGAZINE 
Insert magazine platform spring in magazine platform. Replace 
magazine platform and spring in magazine, take care to replace 
them in correct position. Seize magazine and introduce magazine 
in trigger guard, engaging first front stud of magazine in recess 
in trigger guard. Press on magazine bottom until magazine is 
caught by magazine catch. 
II. COMPLEYE STRIPPING AND ASSEMBLY 
The rifle ought first to be stripped as described for 
stripping. the field 
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							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. Remove the leaf spring from its housing, using 
the hole cut in the spring. Grasp rear of leaf in riqht hand, 
with the left hand grasp the siqht slide and slide lock, 
depress &de lock, and remove slide and slide lock from the leaf. 
Remove slide lock and its spring from the sight slide. 
Unscrew the two lateral adjusting screws and remove rear 
sight aperture. 
In order to strip the bolt carrier catch : with the help of the 
point of a bullet depress the bolt carrier catch spring, this will 
allow to turn the bolt carrier catch body outwards. Remove the 
spring, remove the catch by raising it, remove bolt carrier catch 
stop. 
STRIPPING OF THE HANDGUARD 
Unscrew front end cap screw. Remove front end cap from 
the front. Remove front part of handguard swinging its front end 
upwards. 
Unscrew lower band screw which will free swivel ; lower 
band is so able to open. Remove lower band from the front. 
Remove rear part of handguard. swinging its front end 
upwards. 
STRIPPING THE GAS REGULATOR SLEEVE 
With the handguard removed, it is only necessary to unscrew 
qas regulator wleeve using, if necessary, qas regulator key. 
Remove gas regulator sleeve. 
STRIPPING THE BARREL - RECEIVER ASSEMBLY 
Unscrew trigger guard stop screws, unscrew and remove 
trigger guard screws, the barrel-receiver assembly may thus be 
removed from the stock. 
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