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FN-49 Parts Legend
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| 1 |
Receiver |
17 |
Magazine Follower |
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2 |
Barrel |
18 |
Magazine Follower Spring |
| 3 |
Gas Piston Guide |
19 |
Magazine |
|
4 |
Gas Cylinder |
20 |
Sliding Dust Cover |
| 5 |
Gas Piston Spring |
21 |
Inner Recoil Spring
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|
6 |
Gas Piston |
22 |
Recoil Spring Guide |
| 7 |
End Cap |
23 |
Receiver Cover |
|
8 |
End Cap Screw |
24 |
Receiver Cover Release |
| 9 |
Swivel |
25 |
Outer Recoil Spring |
|
10 |
Lower Band |
26 |
Gas Cylinder Plug |
| 11 |
Guard Screw, Rear |
27 |
Bolt |
|
12 |
Guard Screw, Center |
28 |
Bolt Carrier |
| 13 |
Guard Screw, Front |
29 |
Stock |
|
14 |
Stop Screw |
30 |
Lower Hand Guard |
| 15 |
Trigger Assembly |
31 |
Upper Hand Guard |
|
16 |
Bolt Stop Assembly |
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1) With the rifle
pointed in a safe direction pull back the
bolt carrier handle and ensure the rifle is
unloaded.
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2) Allow the bolt to
close and lock. |
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3) Depress the magazine release. |
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4) Pivot the magazine
forward. |
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5) Remove the magazine from the rifle. |
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6) Remove the magazine
follower and spring from rifle. |
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7) Using a small flat
blade, remove the magazine follower spring
from the magazine follower. |
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8) Separate the magazine
follower spring from the magazine follower. |
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9) Turn receiver cover release counter clockwise to 12 o'clock
position. |
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10) Push the receiver cover forward. |
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11) Lift the receiver cover up and pull
it to the rear
to remove. |
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12) Remove the receiver cover and separate inner recoil spring
from outer recoil spring. |
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13) Remove the short inner recoil spring
from the receiver cover. |
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14) Separate the short inner recoil spring
from the recoil spring guide. |
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15) Separate the forward inner recoil spring
from the recoil spring guide. |
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16) Remove the outer recoil spring from the
bolt carrier. |
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17) Pull the bolt carrier and bolt back to
the opening in receiver
rails. |
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18) Pivot bolt carrier and bolt forward and
out of the receiver.
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19) Pivot the bolt to at the rear as shown
in figure 19.
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20) Separate the bolt and bolt carrier. |
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21) Figure 21 shows the gas cylinder plug and the gas
cylinder plug release button. |
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22) Using a cartridge or (safer) a
punch, push in on the release
button and turn the gas cylinder plug (if you are facing
the muzzle) clockwise until the plug can be removed. |
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23) Remove the gas cylinder plug. |
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24) Remove the gas piston. |
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25) Remove the gas piston spring. |
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26) Unscrew the end cap screw. |
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27) Remove the end cap screw. |
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28) Remove the end cap. |
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29) Unscrew
the lower band screw. |
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30) Remove the swivel. |
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31) Remove the lower band. |
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32) Remove the upper hand guard. |
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33) Remove the lower hand guard. |
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34) Unscrew the front guard screw lock. |
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35) Remove the front guard screw lock. |
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36) Unscrew the center guard screw's stop screw.
Remove the center guard screw's stop screw. |
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37) Unscrew the front guard screw. |
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31)
Remove the front guard screw. |
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39) Unscrew the center guard screw. |
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40) Remove the center guard screw. |
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Note |
| Only
the "early" variant Venezuelan contract rifles (under serial no
4000) and the Egyptian contract rifles have NO lock screw on the
rear guard screw. All other contracts will have a lock screw. |
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41) Unscrew the rear guard screw. |
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42) Remove the rear guard screw. |
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43) Grasping both ends of the trigger assembly, slowly and carefully
lift the assembly. |
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44) Remove the bolt stop assembly. |
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45) Remove barrel/receiver assembly from stock. |
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46) Lift front of sliding dust cover as shown in figure
46. |
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47) Turn sliding dust cover as shown in
figure 47 and
then remove. |
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Note |
| Do not disassemble the
trigger assembly unless you
absolutely need to. |
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48) Drive out the hammer pin. It may be
staked so you may need to brake the staking
before the pin will move.
Staking: The
process of permanently fastening two parts
together by recessing one part within the
other and then causing plastic flow of the
material at the joint. |
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49) Remove the hammer pin by pushing a small
punch or tool through. |
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50) Keep the hammer compressed with the palm
of your hand and remove the tool. |
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51) Slowly allow the hammer spring to
expand. |
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52)
Remove the hammer springs.
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53) Separate the inner hammer spring from
the outer hammer spring. |
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54) Drive out the trigger pin. |
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55) Remove the auxiliary sear spring plunger
and auxiliary sear spring from the auxiliary
sear.
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56)
Separate the auxiliary sear spring plunger
and auxiliary sear spring. |
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57) Remove the trigger. |
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58) Separate the trigger spring and
trigger spring plunger from the trigger. |
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59) Separate the trigger spring and trigger
spring plunger. |
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60) Drive out the magazine catch pin. |
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61) Using a small tool or screw driver push
out the magazine catch pin. |
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62) Remove the ejector. |
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63) Remove and separate the magazine catch
spring and magazine catch. |
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64)
Remove the safety.
Not pictured:
Unscrew and remove the upper and lower
butt stock screws and remove the butt stock.
Unscrew and remove the two screws on
the rear sling swivel. Remove the sling
swivel.
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Reassembly Instructions |
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65) Insert the safety. |
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66) Depress the spring loaded plunger to
snap the safety into place. |
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67) Install the ejector. |
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68)
Figure 68 shows how the ejector should look
when properly installed.
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69) Combine the magazine catch spring and
magazine catch. |
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70) Install the magazine catch spring and
magazine catch. Inset a small punch or screw
driver to hold the magazine catch and
ejector in place. |
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71) Push the tool holding the parts in place
out by inserting the pin. |
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72) Combine the trigger spring and trigger
spring plunger. |
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73)
Insert the trigger spring and trigger spring
plunger into the trigger as shown in figure
73.
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74) Insert the trigger as shown in figure
74. |
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75) Insert a punch or small tool to hold the
trigger, trigger spring and trigger
spring plunger in place. |
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76) Combine the auxiliary sear spring
plunger and auxiliary sear spring. |
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77) Insert the auxiliary sear spring plunger
and auxiliary sear spring into the auxiliary
sear. |
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78) Lay the auxiliary sear in place as shown
in figure 78. |
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79) Pull the tool or punch out that is
holding the trigger in place. Align the
auxiliary sear and trigger and insert
trigger pin. |
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80) Combine the inner hammer spring from the
outer hammer spring. |
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81) Place the springs on the hammer. |
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82) Insert hammer as shown in figure 82. |
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83) Compress the hammer springs and align
hammer with holes followed by insertion of
the hammer pin. |
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84) Tap the hammer pin into place if
necessary. |
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85) Figure 85 shows the completed
reassembly of the trigger assembly for a
reference. |
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86) Insert sliding
dust cover as shown in figure 86. |
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87) Turn sliding
dust cover as shown in figure 87. |
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88) Install
barrel/receiver assembly into stock. |
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89) Figure 89 shows
the alignment of the bolt stop assembly and the guide
hole in the trigger guard. |
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90) Replace the
bolt stop assembly. |
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91) Reinstall
trigger guard assembly. |
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92) Replace
rear guard screw. |
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93) Replace
center guard screw. |
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94) Reinstall the
front trigger guard screw. |
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95) Tighten the
front trigger guard screw partially. |
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96) Tighten the
center guard screw partially. |
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97) Tighten rear guard screw partially. |
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98) Fully tighten the front trigger guard
screw. |
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99) Fully tighten the center guard screw. |
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100) Fully tighten rear guard screw. |
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101) Replace
center guard screw lock. Tighten the
center guard screw lock. |
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102) Lock the
front trigger guard screw lock. |
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103) Install
lower hand guard. |
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104) Install
upper hand guard. |
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105) Install the
lower band. |
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106) Install
swivel and screw into lower band. |
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107) Tighten
screw in lower band. |
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108) Slide the
end cap into place. |
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109) Replace and tighten the end cap screw. |
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110) Reinstall the
gas piston spring. |
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111) Reinstall the
gas piston. |
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112) Align the
gas cylinder plug. |
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113) Reinstall the
gas cylinder plug. Using a cartridge
or (safer) a punch, push in on the release button and turn
the gas cylinder plug (if you are facing the muzzle)
counter clockwise until the plug locks into place. |
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114) Make sure
the semi-automatic indicator (letter printed on the plug)
displayed on the upright surface of the plug. |
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115) Assemble
bolt and bolt carrier by sliding the front of the bolt into the
carrier as shown in figure 115. |
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116) Figure 116 shows the assembled bolt
carrier and bolt. |
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117) Figure 117 shows
the bolt carrier and bolt aligned with the opening
in receiver rails. |
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118) Push down on the bolt and bolt carrier
and push forward. |
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119) Assemble the short inner recoil spring
and the recoil spring guide. |
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120) Assemble the forward inner recoil
spring and the recoil spring guide. |
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121) Attach the short inner recoil spring
from the receiver cover. |
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122) Insert recoil
spring into rear of bolt carrier. |
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123) Slide outer
recoil spring over inner recoil spring. |
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124) Compress
recoil spring and then lower the receiver cover into rails of
receiver. |
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125) Allow receiver cover to move back on rails. |
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126) Turn receiver
cover release counter clockwise. Lock receiver
cover release into 6 o'clock position. |
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127) Attach the magazine spring to the
magazine follower. |
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128) Insert the magazine spring into the
magazine. |
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129) Insert magazine
follower, magazine follower spring, and magazine
into rifle. |
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130) Lock the magazine
into place.
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131) Not pictured:
Replace the butt stock. Replace and
tighten the upper and lower butt stock
screws.
Replace the sling swivel.
Replace and tighten the two screws on
the rear sling swivel.
The rifle is reassembled! |
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