PS Magazine - TB 43-PS-738
PS, The Preventative Maintenance Monthly
ISSUE 738
MAY 2014
PS 737
31
PS 738
MAY 14
Charging Handle
If
you
don’t
clean
the
charging handle, eventually
you’ll
have
trouble
charging. Pull out the handle
from the receiver and clean
it with CLP and a cloth. Use
a
pipe
cleaner
dipped
in
CLP to clean out the handle
and receiver slots.
Slip Ring
If the slip ring collects too much dirt, you’ll have trouble putting on or taking off
the handguards. Have a buddy hold down the slip ring with both hands while you
work out any sand or dirt with a dry pipe cleaner or toothbrush. Don’t put CLP under
the slip ring. Lube attracts more dirt.
Gas Tube and Locking Lugs
Trigger Assembly
If the inner workings of the trigger
assembly get too dirty, the trigger binds.
The best way to clean out the assembly is
to put CLP on a pipe cleaner and gently
clean out dirt. Shooting
low-
pressure
air—not high-pressure—in the assembly
is also a good way to blow out sand.
Bore
A
good
cleaning
begins
with the bore. Carbon builds
up there during Fring. Swab
out the barrel with a patch
moistened with CLP to loosen
the carbon.
Drop the end of the cleaning
rod without the brush in the
chamber end with the barrel
pointing
down.
Attach
the
handle
to
the
end
of
the
rod sticking out the muzzle
and pull the rod all the way
through. Let the section with
the bore brush turn as you
pull it through. That way the
brush bristles follow the ri±ing
grooves.
Repeat this process until all
the carbon is gone, periodically
running
a
patch
moistened
with CLP through the bore to
loosen the carbon. Don’t pull
the bore brush through a dry
bore or reverse direction. That
damages the brush.
Bolt and Bolt Carrier
Clean carbon from the
bolt and bolt carrier with
a worn bore brush, CLP
and a pipe cleaner. Use
the pipe cleaner to clean
out tight areas like inside
the carrier key.
Make
sure
gaps
in
the bolt’s gas rings are
staggered. If they’re lined
up, too much gas escapes
and
the
bolt
won’t
be
pushed back to the locked
position. Stagger the gaps
if necessary.
What
You
Should
Do
Work pipe cleaner moistened with CLP around trigger assembly
Of course,
follow the
complete
cleaning
procedure
in TM 9-1005-
319-10.
But pay
special
attention
to
these critical
items…
Use a pipe
cleaner in
tight areas
Stagger bolt ring gaps
Pull
bore
brush
through
muzzle
Clean
slots
with
a pipe
cleaner
and CLP
Clean
under gas
tube and…
…around
locking lugs
if they
get too
gunked up,
bolt action
slows.
Use your
chamber
brush to
loosen
carbon
around the
lugs. Then
clean the
lugs and
clean under
the gas tube
with a pipe
cleaner and
CLP.
738 30-31.indd
1-2
3/25/14
2:18 PM
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