PS Magazine - TB 43-PS-619
PS, The Preventative Maintenance Monthly
ISSUE 619
JUNE 2004
M16-Series Rifle…
How
Do
You Store M16A4s?
PS 619
JUN 04
14
Quick Release Bracket
When you install the quick release bracket,
there's no need to tighten it down until beads of
sweat pop out on your forehead. If you over-
tighten the bracket, you can actually damage the
bracket or barrel. Snug is tight enough for the
bracket. Para 2-17 in Change 4 to TM 9-1010-
221-23&P updates the procedure for installing
the quick release bracket. Unfortunately, the
only place you can find Change 4 is on the
Electronic Technical Manual website at:
You will need a password to access the TM.
Clean Insides
You'll save yourself
and your unit lots of
trouble if you regularly
clean out the inside of
the M203. That's where
crud collects and oper-
ators aren't allowed to
clean. If the insides get
too clogged,
firing
problems start.
Take off the backplate and remove the follower guide. Clean the follower guide
with CLP and wipe out the inside of the receiver with dry cleaning solvent. Let it air
dry before putting the launcher back together. Do that every month or so, depending
on how much the M203 is fired.
M203 Grenade Launcher…
F
or the M203A1 or
-A2, stake the headlless
pin holes that hold the
barrel latch and barrel
stop. If a pin hole is not
staked, the pin could
fall out.
Old Firing Pin
Some old style M203 firing
pins are still in the field and
they shouldn't be. They can
damage the M203 and anybody
firing it. Check the firing pins
for all your M203s and any pins
you have in bench stock. Get rid
of any old pins.
Stake pin holes for barrel stop and barrel latch
Weed out
old firing
pins
Quick release
bracket only
needs to be
snug
Clean follower guide
and inside receiver
change 4 to
the tm is just
out and it gives
the lowdown on
installing
brackets.
why do we have
so much
trouble
with these quick
release brackets?
Dear Sergeant M.H.,
Yes, the M16A4 goes in the M12. But the M16A4, like the
M4/M4Al carbine, has a removeable carrying handle that
needs to be moved back one slot on the receiver so that the
locking bar fits over the M16A4. When the rifle is to go back
to the field, the carrying handle should be returned to its orig-
inal slot so that the rifle doesn’t need to be zeroed again.
Dear Half-Mast,
Do you store
the M16A4 rifle
in the M12
rack?
SGT M.H.
OLD
NEW
Barrel
stop
Barrel
latch
d
619. 14-15 (C)
4/26/04
8:23 PM
Page 1
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