PS Magazine - TB 43-PS-690
PS, The Preventative Maintenance Monthly
ISSUE 690
MAY 2010
22
PS 690
MAY 10
Dear Half-Mast,
TM 9-1005-319-23&P is not very clear on how to install the quick
release bracket (QRB) on the M16 rifle/M4 carbine for the M203 grenade
launcher. Is there anyplace to look for instructions?
SGT C.H.
Removing the shim plate
1.
Open the QRB.
2.
Rotate the plunger counterclockwise
until it stops in the locked position.
3.
Depress the plunger and hold it
down.
4.
Slide the shim plate up and out of the
QRB.
To replace the shim plate, reverse
these steps. The procedure for
determining the correct position of the
shim is found in both TM 9-1010-221-
23&P and the -10 TM.
Closing the QRB
1.
Close the latch arm so that the latch
arm hole catches the hook.
2.
Rotate the latch lever down.
3.
Depress the plunger and push the
latch arm down to lock it in place.
4.
Rotate the plunger counterclockwise
until it stops in the fully-locked
position.
For information on how to operate
the old style bracket, see the -23&P.
Sergeant C.H.,
Yes. Instructions for installing the
quick release bracket onto the M203A2
grenade launcher begin on Page 2-47
of TM 9-1010-221-23&P. The bracket
must be put on initially by the ±eld
maintainer, which was formerly called
direct support. After that, the operator
can put on and take off the M203A2.
The following instructions are for
operating the new style quick-release
bracket when mounting the M203A2.
These instructions will be added to
the TM.
Opening QRB
1.
Facing the front of the QRB, turn the
plunger clockwise until it stops. This is
the unlocked position.
2.
Fully depress the plunger and hold it
while pulling up on the latch lever until
it pops open.
3.
Lift the latch lever to the full upright
position.
4.
Lift the latch arm away from the
hook.
How to
Install QRB
M16-Series Rifle, M4/M4A1 Carbine…
How to
Install QRB
I’m not sure
how to get
you two
together.
I don’t
know how to
install the
qrb for you.
half-mast
will know
what to do!
Latch lever
Plunger
Latch arm
Latch arm
Shim plate
well,
don’t look
at me!
Plunger
Plunger
690.22-23.indd
1-2
3/28/10
10:38:02 AM
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