PS Magazine - DECEMBER 1980
PS, The Preventative Maintenance Monthly
ISSUE 337
DECEMBER 1980
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If your unit's M203 grenade launchers don±t have tHe latest firing pin, your
grenadiers have probably found ouT the hard way.
²he old pin is too Long and punctures pRimers³ ´he new pin,
NSN
10µ0-00¶
348·8433, came out about 3 years ago and is the only one in supply³ All old pins
shouLd haVe been repLaced by support by this time.
Armorers can spot the old pins easily enough¸ ²hey have indenTs on each
¹
side, whereas the new ones are fullºrounded³
OLD
Firing pIn
1010-00-438-±55
Use protruSIon gage
N²N 5220-0³´783-µ655
NEW
Firing pin
1010¶00·348-8439
Use proTrusion gAge
N²N 49¸3¶00-348-8434
Also, you grenadiers can Tell if you'Ve got old pins³ ´he primer of the round
may be puncTured afTer firing³
If you±Ve goT an old pin, Turn
the Launcher in to support³
has good pic»
Tures and insTrucTions on how To
re¼oVe
and
insTa½L
Parts
on
the
M¾911A¾
³45¿caL
PisToL,
incLUdÀng
re¼oVing the seÁr and disconnecTor³
ÂoweVer, iT comes uP shorT on
instaL½ing the seÁr³ Some troops try iT
uPside down, wÃich ¼akes ProBLe¼s³
²o keeP it si¼PLe, assemble the sear
and disconnector as shown in panel
18Ä Fig 3Å14 of TÃE Æ12 ²Ç³
NoW, keep The Lugs of The sear
The disconnecTor against The back of
fÁcing doWn, Toward the base of the
The
TriggerÈ
InsTaL½
The
sear
Pin
pisToL grip³ ²he rounded hu¼P of the
sear sÃouLd be facing the pisToL³
Disconn¹cTor
Pin
TÉroUgh the sear, and yoUÊre done³ Ëe
sure To do the steps in order, as shoWn
on pages 3Å12 and 3Å13 of ÌÃe ²Ç³
27
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