PS Magazine - TB 43-PS-587
PS, The Preventative Maintenance Monthly
ISSUE 587
OCTOBER 2001
T
he MK 19 machine gun is far different from other machine guns when it comes
to lubing. It requires something that withstands heat better than CLP, which gums
up the MK 19's moving parts instead of helping the parts move smoothly.
The best MK 19 lube is LSAT. Use NSN
9150-00-949-0323 for 8 ounces and NSN 9150-
01-109-7793 for 1 pound. But it's hard to get.
GMD (grease, molybdenum disulfide) is a good
substitute and is in stock. It comes in three sizes:
PS 587
OCT 01
45
for Your MK 19
Lubing Power
for Your MK 19
Lubing Power
Give extra lubing attention to the
feed pawls, the cocking lever rails, the
pivot posts on the primary drive lever,
and the bolt assembly. You'll have trou-
ble firing if you forget just one of them.
The chamber is the worst
carbon collector. If carbon is
not cleaned out of the chamber,
the
chamber
eventually
becomes pitted and the receiver
must be replaced. To clean the
chamber, soak your bore brush
in RBC and run it through the
muzzle into the chamber. Do
this again and again until the
brush stops pulling out carbon.
Armorers, you're authorized
to use dry cleaning solvent on
the MK 19 for cleaning off car-
bon. But never dip the bolt,
ogive plunger, or sear in sol-
rag or brush dipped in solvent.
Use RBC and
bore brush
on chamber
Don’t dip these
parts in solvent
cocking lever rails
when lubing
please…
don’t…
I
hate
CLP!
Aha!
there
you
are!
oh
no!
I know
it’s here,
some-
where!
where’d
that
mk 19
get to?
Remember that when you switch
lubes, you need to completely wipe off
the old lube before wiping on the new
one. Mixing lubricants weakens them.
Cleaning
NSN 9150-00-
935-4018
223-4004
965-2003
14-oz
6
1
∕
2
-lb
35-lb
GMD
Bolt
Sear
plunger
get that
old lsat
off before
using me.
with lsat.
for Your MK 19
587. 44-45 (C)
9/3/01
7:31 PM
Page 1
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