PS Magazine - TB 43-PS-698
PS, The Preventative Maintenance Monthly
ISSUE 698
JANUARY 2011
24
PS 698
JAN 11
25
PS 698
JAN 11
Dear Half-Mast,
How do I get a practice bolt for firing M862 plastic training rounds from
an M16 or M4/M4A1?
R.M.
Dear R.M.,
You need the M2 practice
bolt, which comes with NSN
1005-01-184-4041 and costs a
little less than $80. The M2 bolt
converts the weapon from gas operation
to blowback and prevents accidental fring
of a real round.
S
ome gunners think that because they’re just fring blanks it doesn’t make much
diFFerence which blank fring attachment (B±A) they use. But it
does
make a
diFFerence to your weapon.
The M16 ri²e B±A will ft on the M4 carbine and the M249 machine gun, but it
will give them fts during fring. They’re much more likely to malFunction with the
wrong B±A.
Here are the correct B±A NSNs to keep your weapon fring happily:
•
M16-series ri²e, NSN 1005-00-118-6192
•
M4/M4A1 carbine, NSN 1005-01-361-8208 (The M16 and M4 B±As look alike,
except For one big diFFerence–the M16 B±A is red and the M4’s is yellow. And one
small diFFerence: the M4’s has a slightly larger hole For bleeding gas.)
•
M249 machine gun, NSN 1005-21-912-8997 (standard barrel)
NSN 1005-01-537-0491 (short barrel)
•
M240B and M240L machine guns, NSN 1005-01-480-0289
•
M2 machine gun, NSN 1005-01-091-7510
There is no B±A NSN For the M240 and M240C machine gun. Instead, you must
order the B±A’s parts: chamber and discriminator assembly, NSN 1005-01-142-
2841; ordinance bag, NSN 8105-01-147-9841; and M1/M1A1 fring adapter, NSN
IF you have any questions about
mortars, contact TACOM’s Joe
Schmidt at DSN 786-8783, (586) 282-
8783, or email:
joe.schmidt@us.army.mil
Questions about armor? Contact
TACOM’s Gordon Bieri at DSN 793-
2189, (309) 782-2189, or email:
gordon.bieri@us.army.mil
Questions about M109-series
artillery? Contact TACOM’s Gary
Rogers at DSN 793-0030, (309) 782-
0030, or email:
gary.s.rogers@us.army.mil
Questions about 155mm-series
artillery? Contact TACOM’s Marty
Nelson at DSN 793-7852, (309) 782-
7852, or email:
marty.nelson@us.army.mil
Questions about 105mm-series
artillery? Call TACOM’s Mario Nieto
at DSN 793-8512, (309) 782-8512,
or email:
mario.nieto1@us.army.mil
M16-Series Rifle,
M4/M4A1 Carbine…
how do I get
a praCtiCe
bolt?
Small
Arms…
The
BFA
Difference
Alas,
the MK 19
machine
gun has
no
BFA.
M4/M4A1
BFA is
yellow
,
the M16’s
is
red
hey, that’s
not
my
bfa!
I’m strictly a
red
kinda guy.
that’s for
my little
brother,
the m4!
yeah, let’s
ask half-mast.
a practiCe
bolt
would
be good for
training.
698.24-25.indd
1-2
11/30/10
9:40 AM
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