M2/M3 BFV: FIRE CONTROL SYSTEM - OD1608 - LESSON 1/TASK 1
FIGURE 13.
GUN BORESIGHT CONTROLS.
(25) Remove the boresight telescope and the 25mm boresight
adapter from the 25mm gun barrel.
This is done by pulling the
boresight telescope gently from the 25mm boresight adapter.
Then,
the 25mm boresight adapter and red streamer are pulled out of the
25mm gun barrel.
4.
Conclusion
The 25mm gun is the first of the five fire control system components
to be boresighted.
Once boresighting is completed on the 25mm gun,
the other weapons and sighting devices can be boresighted.
Generally, when the backup sight is to be boresighted, it is done
immediately after the 25mm gun.
If the backup sight is not being
boresighted for any reason, the 7.62mm machinegun is boresighted
next.
In any event, the backup sight or 7.62mm machinegun are
boresighted on the same target as the 25mm gun, and the handwheels or
controls should not be moved after boresighting the 25mm gun until
these other components have also been boresighted.
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