PS Magazine - TB 43-PS-667
PS, The Preventative Maintenance Monthly
ISSUE 667
JUNE 2008
24
PS 667
JUNE 08
25
PS 667
JUNE 08
T
he Army is working on providing more realistic training with the ultimate
training munition (UTM), which is used with the close combat mission capability
kit (CCMCK).
UTMs are paint-flled rounds that can be shot From the M9 and M11 pistols, the
M16-series rifle, the M4/M4A1 carbine and the M249 machine gun.
The Army, however, has not approved use oF CCMCKs and UTMs and doesn’t
expect to do so until the early Fall.
UnFortunately, units have locally purchased oFF-the-shelF versions oF CCMCKs
already and have been training with them. The paint From the UTMs has ruined
numerous barrels as a result.
BeFore fring any kind oF round–live as well as blanks–you must thoroughly clean
and lube your weapon like it says in the weapon’s -10 TM. IF your commander directs
you to train with UTMs, then you must clean your weapon aFter fring a basic load.
Make especially sure you clean out any debris in the bore From the UTM. Otherwise,
you risk a ruined barrel.
Watch PS For word on when the CCMCK is released For issue. IF you have
questions about CCMCK and UTM, contact TACOM-Rock Island’s Ernest Sewell
at DSN 793-0640, (309) 782-0640, or email:
ernest.sewell
@us.army.mil
What is milking a grenade? Milking is the unintentional loosening oF your grip on
the grenade saFety lever beFore you throw the grenade. Milking lets the striker hit the
primer, which initiates the Fuze delay element without the thrower being aware the
Fuse is burning. Disaster Follows.
To avoid milking, remember that releasing the saFety lever even slightly can make
the grenade live. Any time you remove the saFety pin you must hold the saFety lever
tightly against the grenade until you throw the grenade. And don’t remove the saFety
pin until you have to.
Small Arms…
UTMs Not
Approved.
..Yet
Grenades…
Milking is
Deadly
during a live-fire
training exercise,
a soldier was
killed because he
“milked” an m6
7
fragmentation
grenade.
the grenade
exploded before
he threw it,
killing him and
wounding three
other soldiers.
well, I
guess I’m
finished.
gosh!
this
paint is
all over
me!
unfortunately,
this paint has
finished me, too.
I’m going to
need a new
barrel.
1.
When safety pin is withdrawn, the safety
lever is free to release from the grenade body
2.
When safety lever is released,
striker rotates on axis to strike primer
3.
When primer is struck, flash
of heat ignites delay element
4.
Delay element burns down
to the detonator or igniter
5.
Detonator or igniter sets off
burster or main charge (Fller)
667.24-25.indd
1-2
5/5/08
6:16:18 PM
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