EOTech ATPIAL (AN/PEQ-15) - ADVANCED TARGET POINTER ILLUMINATOR AIMING LIGHT - Manual (Page 34)

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2.5 BORESIGHTING PROCEDURES
The ATPIAL incorporates a factory preset feature that may
be used to quickly bring the co-aligned Visible and IR Aim
Lasers nearly parallel with the barrel of the host weapon.
CAUTION
Do not force the adjusters beyond their end of
travel. Forcing them will damage the adjusters or
internal components.
NOTE
To minimize laser travel as a result of weapon
shock, it is good practice to place a positive load
on the adjusters by ending all boresight adjuster
rotations with an approximate 1/2 turn in a CCW
direction.
To establish this preset, rotate both the Aim Laser boresight
adjusters to the full CCW end of travel, then rotate them
back CW three complete turns. Finally, place a positive load
on the adjusters by turning each adjuster 1/2 turn CCW.
The ATPIAL may also be boresighted to the host weapon
using a Laser Borelight System (LBS). Table 2-7 provides
10m Target Offsets for this purpose. Refer to the latest
version of the LBS Operator Manual for boresighting
procedures.
The following abbreviations and their definitions apply solely
to the last two columns of Table 2-7:
L Left R Right
U Up D Down
VIS Visible Aim Laser IR IR (Infrared) Aim Laser