Manual

30 31
These mechanical settings will allow you to obtain a 25m/300m zero.
IT IS RECOMMENDED FROM THIS POINT THAT YOU USE THE FRONT SIGHT
TO OBTAIN YOUR INITIAL ZERO. THE REAR SIGHT ELEVATION ADJUSTMENT
IS USED ONLY FOR ADDITIONAL TARGETING DISTANCES.
1. Flip up the rear sight by grasping the rear sight housing and pulling
up and towards the muzzle until you feel it lock into place (Figure 24).
The rear sight assembly is
adjusted by hand. It consists of
a MIL-STD-1913 rail mount, two
sight apertures, an elevation
drum, and two windage knobs,
one on each side of the sight
(Figure 22).
The front sight assembly can be
adjusted with a TORX
®
T25 wrench,
and a M16/AR15 A2 sight tool. The
front sight assembly consists of a
front sight housing with index line, a
front sight post, a front sight post
detent, a windage screw with arrow,
a windage screw detent, and a front
locking cam (Figure 23, page 31).
18.2. ZEROING
Your sights are pre-set to a
mechanical zero from the factory,
these settings are as follows:
• Front sight: The base of the
front sight post is flush
with the opening of the front
sight housing and the front
sight housing index line is
centered on the center gas
block index line.
• Rear sight: The rear sight
housing index line and the
rear sight post index line
should be aligned and
elevation drum set to 3.
FIGURE 24
Flip the rear sight into position until it locks
in place.
FIGURE 25
Push the front sight lock forward and flip
back into position until it locks in place.
FIGURE 23
Front Sight Nomenclature
Front Sight Post
Front
Sight
Housing
Index
Lines
Gas
Block
Index
Line
Front
Sight
Housing
Front
Sight
Locking
Cam
Front
Sight
Windage
Knob
FIGURE 22
Rear Sight Nomenclature
Sight Aperture
Elevation
Drum
Sight
Aperture
Housing
Rear Sight
Housing
Index Line
Left
Windage
Knob
Right
Windage
Knob
Rail Mount
Rear Sight
Post Index
Line
Left
Windage
Knob
Rear Sight
Housing