PS Magazine - TB 43-PS-702
PS, The Preventative Maintenance Monthly
ISSUE 702
MAY 2011
22
PS 702
MAY 11
W
hen the AN/PAS-13 thermal weapon sight (TWS) is mounted on the M2
machine gun, a gunner can target an enemy from as far as two kilometers away.
But it’s very difFcult for him to look through the TWS while Fring.
That’s why the Army has come out with the external power conditioner
(EPC) and an EPC bracket assembly. Both come with NSN 6130-01-557-1542.
The EPC makes it possible to connect the TWS to a monitor and/or a head-
mounted display so a gunner can sight and shoot simultaneously. The monitor
and display come with the EPC.
Dear Editor,
Many Soldiers (and armorers)
don’t realize that when you mount
the M68 sight (also known as
the close combat optical) on the
M16A4 rifle or M4/M4A1 carbine
you need a spacer and longer
screws. Please remind yourreaders
of this.
SGT Rose Gushanas
Elizabethtown, PA
The EPC bracket assembly attaches to the TWS at the spacer rail grabber so that
the access cable has a solid connection to the TWS without straining the access port.
A cable connects the bracket to the EPC at a quick disconnect. The EPC can be used
with all Fve versions of the AN/PAS-13.
Some Soldiers who tested the EPC with the helmet-mounted display complained
of motion sickness. To remedy that, the Army has designed a display that can be
attached to safety glasses. Because the glasses provide a more secure Ft than a
helmet-mounted eyepiece, motion sickness should be reduced or eliminated. Order
the glasses’ display with NSN 5855-01-556-7130.
When using the EPC, gunners should acquire targets using the TWS wide
Feld of view and then switch to narrow Feld of view for Fring. Otherwise, you
will have a hard time Fnding the target.
Instructions for mounting and using the EPC come with it.
Editor’s note:
Sure thing, Sergeant.
As WP 0027 00-2 in TM 9-1240-413-
13&P (Mar 08) points out, you will
need a spacer, NSN 5365-01-448-
8912, and longer screws, NSN 5305-
01-448-9826, when you put the M68
on the M16A4 or M4/M4A1. Thanks
for reminding us.
with TWS
Sight and Shoot
M2 Machine Gun…
with TWS
Sight and Shoot
M68 Sight Needs
Spacer for M16A4,
M4/M4A1
EPC bracket attaches
to spacer rail grabber
Use spacer
and longer
screws for
M4 and
M16A4
Display for safety glasses should
eliminate motion sickness
I just can’t
sight and fire
at the same
time.
you need the new
external power
conditioner.
it let’s you
do
Both
at the
same time.
this is
frustrating!
702.22-23.indd
1-2
3/28/11
10:31 AM
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