Manual

Caution: The operating rod is bent inten-
tionally so that it will not bind against the
enlarged portion of the barrel. Do not attempt
to straighten it.
f. With the right hand, grasp the bolt by the
operating lug and slide it fully to the rear; then
slide it forward, lifting upward and outward to
the right front with a slight rotating motion to
remove it.
g. Using the screwdriver blade of the Ml0
cleaning rod handle as shown in figure 8, unscrew
and remove the gas cylinder lock screw.
h. Unscrew and remove the gas cylinder lock.
Loosen the gas cylinder by tapping lightly toward
the muzzle on the bayonet stud with a piece of
wood or similar soft object (fig. 9). Remove the
gas cylinder, taking care not to burr or damage
the splines. Do not remoue or attempt to adjust
the front sight.
i. Remove the front handguard by sliding it
forward over the muzzle. Do not attempt to re-
move the rear ha&guard.
j. The parts of the barrel and receiver group
in their order of disassembly are shown in figure
10.
9. Assembly of the Barrel and Receiver
Group
a. Replace the front handguard by sliding it
over the muzzle and insure that it is seated in the
front band.
b. Place the gas cylinder over the barrel, mak-
ing sure the splines are alined with their grooves.
Push the gas cylinder down as far as it will go.
If tapping is necessary, use a piece of wood on the
bayonet stud. Engage the threads of the gas
cylinder lock with those on the barrel and screw
the lock on by hand until it is finger tight (do not
use a tool). If the lock is not alined with the gas
cylinder, do not force it, but unscrew it until it is
alined. Replace and tighten the gas cylinder lock
screw with the handle assembly of the Ml0 clean-
ing rod.
c. To replace the bolt, hold it by the operating
lug and place the rear end of the bolt onto the
bridge of the receiver.
Rotate the bolt counter-
clockwise as far as necessary to permit the tang
of the firing pin to clear the top of the bridge of
the receiver.
Guide the left locking lug of the
bolt into its groove on the left side of the receiver.
Lower the righk locking lug on its bearing sur-
face and slide the bolt halfway to the rear.
d. To replace the operating rod, hold the han-
dle with the right hand and place the piston end
into the gas cylinder. Aline the operating rod
so that the recess in the hump fits over the operat-
ing lug of the bolt. While applying pressure
downward and inward on the handle, pull the op-
erating rod to the rear until the guide lug is en-
gaged in its groove (fig. 11). Move the operating
rod forward until the bolt is closed.
e. Turn the ,barrel and receiver group over so
that the sights are down and the muzzle is to the
left. Replace the follower assembly so that its
guide ribs fit into their grooves in the receiver.
Make sure that the slide of the follower is down
and that the square hole is to the rear (fig. 12).
The slide will rest against the bolt.
f. Replace the bullet bide so that its shoulders
fit into their slots in the receiver and the hole in
the toe of the bullet guide is alined with the holes
in the receiver (fig. 13).
g. With the right hand, lift up the lower part
of the bullet guide slightly. With the left hand,
insert the rear arm of the operating rod catch as-
sembly through &he clearance cut in the side of
the bullet guide. Make sure that the rear arm is
underneath the front stud of the clip latch which
projects into the receiver (fig. 14). Lower the
bullet guide into place. Test for correct assembly
by pressing down on the front arms of the opera%-
ing rod catch assembly. It should move and you
should be able to feel the tension of the clip latch
spring.
h. Replace the follower arm by passing its rear
studs through the bullet guide and inserting them
into the guide grooves on the follower (fig. 15).
Allow the wings of the follower arm to rest astride
the toe of the bullet guide. Aline the holes in the
operating rod catch assembly, follower arm, and
bullet guide with those in the receiver and replace
the follower arm pin from the near side.
i. Insert the loose end of the operating rod
spring into the operating rod. Grasp the follower
rod with the left hand, making sure that its hump
is toward the barrel. Pull toward the muzzle,
compressing the operating rod spring, and engage
the claws of the follower rod with the front studs
of the follower arm (fig. 16). You may have to
raise the follower assembly to do this,