PS Magazine - TB 43-PS-693

PS, The Preventative Maintenance Monthly

ISSUE 693

AUGUST 2010
PS Magazine - TB 43-PS-693 - Page 11 of 33
U
sing a bullet or multi-purpose tool to adjust the front sight on your rifle or machine
gun will soon leave you with a ruined sight.
The M16-series rifle, M4/M4A1 carbine and M240B machine gun all have special
sight adjustment tools that let you set the sight without damaging it.
The M16/M4 tool can’t be ordered with an NSN. You can either have your support
make the tool using the diagram in WP 0030-3 in TM 9-1005-319-23&P or you
can go to your local gun shop and buy the tool. Most units have found it easier and
cheaper to just buy the tool.
Order the M240B tool with NSN 1005-01-458-7004 for around $25.
Dear Half-Mast,
In PS 644 (July 06), you gave
the NSN for the M2 machine
gun’s cover as NSN 1005-00-
781-9108. But the FED LOG
shows this NSN as unavailable. Is
there a new NSN for the cover?
SSG T.S.
Dear Sergeant T.S.,
Yes, the NSN has
been changed to
Wrong
Tool
Blinds
Sight
Small Arms…
Wrong
Tool
Blinds
Sight
M2 Machine Gun…
Cover NSN Changed
hey,
wait
a minute!
that nsn for
my cover is
no good!
half-mast needs
to
straighten
this out!
is this
gonna
hurt?
y’know, I don’t think
that multi-purpose tool
is gonna do the job!
18
PS 693
AUG 10
T
he M16A4 rifles and the M4A1 carbines won’t Ft securely in the M12 rack unless
you get the rack modiFed.
To lock the M4A1s in the M12 rack, you
need an adapter bar on the rear of the arms rack.
Your support (or Feld maintenance) makes
the bar following the instructions beginning in
WP 0036-1 in TM 9-1005-319-23&P.
To lock an M16A4 with a carrying handle
in the M12 rack, you may need to move the
carrying handle back one notch to the rear. The
carrying handle must be returned to the original
position for Fring to maintain the zero.
The standard adapter rail system
installed on the M16A4 or M4/
M4A1 will prevent the rack from
closing. In that case, a single
locking bar is needed. To get
instructions for fabricating a single
locking bar, contact TACOM-Rock
Island’s James Rollins at DSN 793-
1797, (309) 782-1797, or email:
james.rollins@us.army.mil
Any M12 racks that are Ftted with
the adapter bar or single locking bar
must be certiFed as secure. Contact
your local TACOM-Rock Island
logistics assistance representative
or James Rollins for details.
Adapting
Racks for
M16A4s
and
M4A1s
Adapter Bar
Move M16A4 carrying handle back one notch
Mounting rail installed?
Rack locking bar may be needed
hey!
we’re not
secure in
here!
we have to be
locked in tight
when you leave
us alone!
693.18-19.indd
1-2
7/9/10
11:42:24 AM
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