PS Magazine - TB 43-PS-694
PS, The Preventative Maintenance Monthly
ISSUE 694
SEPTEMBER 2010
26
PS 694
SEP 10
27
PS 694
SEP 10
Check the M16/M4 bolt carrier key.
If the carrier key gets
plugged up with carbon, the bolt won’t go back far enough to chamber the
next round. We’re still finding Soldiers who are using cotton swabs to clean
the carrier key. The cotton comes off inside the carrier key and plugs it up.
Armorers should stress to their unit the only right way to clean the carrier
key is with a worn out bore brush and CLP.
We recommend
to armorers that
they keep an old gas
tube on hand. When
they’re checking
weapons, they can
stick the gas tube
in the carrier key.
If the tube sticks,
they know the
carrier key probably
needs cleaning.
Remove the blank
firing adapter ASAP.
Some units that spend
most of their time training
with blanks leave the blank
adapters attached to the
weapons, even when they’re
stored in the arms room. If
the blank adapters are left
on for a long time, they can
become permanently stuck
to the barrel. Then we
have to replace the barrel.
Remove the adapter when
you’re through training.
Remember that
carbon hardens.
The
longer you leave carbon in a
weapon, the harder it is to
clean out.
If carbon is left in your
weapon, the next time you
fire the carbon deposit just
gets thicker and harder to
remove. So cleaning your
weapons immediately after
firing will not only help your
weapons, but also make
cleaning easier in the future.
John Mayo
Terry Goynes
Ft Polk, LA
Editor’s note:
You guys are
indeed the voices of experience.
Thanks for sharing.
Use old gas tube to check if carrier key is OK
Take off blank
Fring adaptor
after training
my gosh, the
carbon in your
chamber is
rock-hard!
I
can’t
get it
out!
if you hadn’t
waited a
week to
clean me, it
woulda been
easy.
pm
a
toll
de plane!
de plane!
whO is
our guest
this time,
boss?
an army mechanic
by the name of joe
snow, bamboo.
he is a staff
sergeant in the
army… and…
694.26-27.indd
1-2
7/27/10
2:29:22 PM
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